Fix the status codes returned from failed Read interactions.

[bzbarsky-apple]

Fixes #18343

Problem

Status responses not following the spec.

Change overview

Fix to follow spec. Need to check path counts first, because an error there should take precedence over lack of read handlers (which is transient).

Testing

Unit tests added to exercise the various cases.

[github-actions]

PR #18575: Size comparison from f68588d to abbc1b3

Increases (15 builds for esp32, linux, telink)

platform	target	config	section	f68588d	abbc1b3	change	% change
esp32	all-clusters-app	m5stack	(read only)	1056027	1056031	4	0.0
			.flash.text	1050643	1050647	4	0.0
linux	all-clusters-app	debug	(read only)	2750985	2751193	208	0.0
			.text	2333922	2334130	208	0.0
	bridge-app	debug+rpc	(read only)	2032545	2032737	192	0.0
			.text	1705474	1705666	192	0.0
	chip-tool	debug	(read only)	9308901	9309093	192	0.0
			.text	7499877	7500069	192	0.0
	chip-tool-no-interactive-ipv6only	arm64	(read only)	9078244	9078356	112	0.0
			.text	7169060	7169172	112	0.0
	lighting-app	debug+rpc	(read only)	2327073	2327265	192	0.0
			.text	1971730	1971922	192	0.0
	lock-app	debug	(read only)	2240657	2240849	192	0.0
			.text	1880962	1881154	192	0.0
	ota-provider-app	debug	(read only)	2061289	2061481	192	0.0
			.text	1723762	1723954	192	0.0
	ota-requestor-app	debug	(read only)	2090273	2090465	192	0.0
			.text	1755186	1755378	192	0.0
	shell	debug	(read only)	2566777	2566985	208	0.0
			.text	2182082	2182290	208	0.0
	thermostat-no-ble	arm64	(read only)	2352844	2352956	112	0.0
			.text	1975680	1975792	112	0.0
	tv-app	debug	(read only)	2852769	2852977	208	0.0
			.text	2448194	2448402	208	0.0
	tv-casting-app	debug	(read only)	5415481	5415673	192	0.0
			.text	4715362	4715554	192	0.0
telink	light-switch-app	tlsr9518adk80d	(read/write)	782680	782688	8	0.0
			text	553486	553490	4	0.0
	lighting-app	tlsr9518adk80d	text	570252	570256	4	0.0

Decreases (6 builds for cyw30739, efr32, esp32)

platform	target	config	section	f68588d	abbc1b3	change	% change
cyw30739	light	cyw930739m2evb_01	(read/write)	625494	625486	-8	-0.0
			.app_xip_area	529108	529100	-8	-0.0
	lock	cyw930739m2evb_01	(read/write)	628458	628450	-8	-0.0
			.app_xip_area	533528	533520	-8	-0.0
	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	572890	572882	-8	-0.0
			.app_xip_area	468244	468236	-8	-0.0
efr32	lighting-app	BRD4161A+rpc	(read only)	951800	951784	-16	-0.0
			.text	951792	951776	-16	-0.0
	window-app	BRD4161A	(read only)	897732	897716	-16	-0.0
			.text	897724	897708	-16	-0.0
esp32	all-clusters-app	c3devkit	(read only)	1000892	1000890	-2	-0.0
			.flash.text	1000892	1000890	-2	-0.0

Full report (31 builds for cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)

platform	target	config	section	f68588d	abbc1b3	change	% change
cyw30739	light	cyw930739m2evb_01	(read/write)	625494	625486	-8	-0.0
			.app_xip_area	529108	529100	-8	-0.0
			.bss	79028	79028	0	0.0
			.data	708	708	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	lock	cyw930739m2evb_01	(read/write)	628458	628450	-8	-0.0
			.app_xip_area	533528	533520	-8	-0.0
			.bss	77604	77604	0	0.0
			.data	672	672	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	572890	572882	-8	-0.0
			.app_xip_area	468244	468236	-8	-0.0
			.bss	87024	87024	0	0.0
			.data	584	584	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read only)	917612	917612	0	0.0
			(read/write)	133244	133244	0	0.0
			.bss	131184	131184	0	0.0
			.data	2060	2060	0	0.0
			.text	917604	917604	0	0.0
		BRD4161A+rpc	(read only)	951800	951784	-16	-0.0
			(read/write)	149928	149928	0	0.0
			.bss	147664	147664	0	0.0
			.data	2264	2264	0	0.0
			.text	951792	951776	-16	-0.0
		BRD4161A+rs911x	(read only)	791052	791052	0	0.0
			(read/write)	129512	129512	0	0.0
			.bss	127444	127444	0	0.0
			.data	2068	2068	0	0.0
			.text	791044	791044	0	0.0
	lock-app	BRD4161A+wf200	(read only)	947000	947000	0	0.0
			(read/write)	123996	123996	0	0.0
			.bss	121972	121972	0	0.0
			.data	2024	2024	0	0.0
			.text	946992	946992	0	0.0
	window-app	BRD4161A	(read only)	897732	897716	-16	-0.0
			(read/write)	133304	133304	0	0.0
			.bss	131256	131256	0	0.0
			.data	2048	2048	0	0.0
			.text	897724	897708	-16	-0.0
esp32	all-clusters-app	c3devkit	(read only)	1000892	1000890	-2	-0.0
			(read/write)	1478106	1478106	0	0.0
			.dram0.bss	68208	68208	0	0.0
			.dram0.data	14624	14624	0	0.0
			.flash.rodata	209848	209848	0	0.0
			.flash.text	1000892	1000890	-2	-0.0
			.iram0.text	62954	62954	0	0.0
		m5stack	(read only)	1056027	1056031	4	0.0
			(read/write)	480100	480100	0	0.0
			.dram0.bss	73720	73720	0	0.0
			.dram0.data	34200	34200	0	0.0
			.flash.rodata	240184	240184	0	0.0
			.flash.text	1050643	1050647	4	0.0
			.iram0.text	123267	123267	0	0.0
k32w	light	k32w061+release	(read/write)	683020	683020	0	0.0
			.bss	80224	80224	0	0.0
			.data	2016	2016	0	0.0
			.text	599076	599076	0	0.0
	lock	k32w061+release	(read/write)	729524	729524	0	0.0
			.bss	80656	80656	0	0.0
			.data	1976	1976	0	0.0
			.text	645188	645188	0	0.0
linux	all-clusters-app	debug	(read only)	2750985	2751193	208	0.0
			(read/write)	175904	175904	0	0.0
			.bss	85056	85056	0	0.0
			.data	2064	2064	0	0.0
			.data.rel.ro	82616	82616	0	0.0
			.dynamic	608	608	0	0.0
			.got	4496	4496	0	0.0
			.init	27	27	0	0.0
			.init_array	1016	1016	0	0.0
			.rodata	240733	240733	0	0.0
			.text	2333922	2334130	208	0.0
	bridge-app	debug+rpc	(read only)	2032545	2032737	192	0.0
			(read/write)	147736	147736	0	0.0
			.bss	72832	72832	0	0.0
			.data	3936	3936	0	0.0
			.data.rel.ro	65384	65384	0	0.0
			.dynamic	592	592	0	0.0
			.got	4272	4272	0	0.0
			.init	27	27	0	0.0
			.init_array	688	688	0	0.0
			.rodata	168873	168873	0	0.0
			.text	1705474	1705666	192	0.0
	chip-tool	debug	(read only)	9308901	9309093	192	0.0
			(read/write)	580088	580088	0	0.0
			.bss	23936	23936	0	0.0
			.data	1152	1152	0	0.0
			.data.rel.ro	548704	548704	0	0.0
			.dynamic	624	624	0	0.0
			.got	5000	5000	0	0.0
			.init	27	27	0	0.0
			.init_array	656	656	0	0.0
			.rodata	479933	479933	0	0.0
			.text	7499877	7500069	192	0.0
	chip-tool-no-interactive-ipv6only	arm64	(read only)	9078244	9078356	112	0.0
			(read/write)	646209	646209	0	0.0
			.bss	42209	42209	0	0.0
			.data	1192	1192	0	0.0
			.data.rel.ro	583952	583952	0	0.0
			.dynamic	560	560	0	0.0
			.got	15016	15016	0	0.0
			.init	24	24	0	0.0
			.init_array	184	184	0	0.0
			.rodata	444948	444948	0	0.0
			.text	7169060	7169172	112	0.0
	lighting-app	debug+rpc	(read only)	2327073	2327265	192	0.0
			(read/write)	153184	153184	0	0.0
			.bss	74624	74624	0	0.0
			.data	2048	2048	0	0.0
			.data.rel.ro	70744	70744	0	0.0
			.dynamic	608	608	0	0.0
			.got	4344	4344	0	0.0
			.init	27	27	0	0.0
			.init_array	792	792	0	0.0
			.rodata	187913	187913	0	0.0
			.text	1971730	1971922	192	0.0
	lock-app	debug	(read only)	2240657	2240849	192	0.0
			(read/write)	147864	147864	0	0.0
			.bss	73312	73312	0	0.0
			.data	1568	1568	0	0.0
			.data.rel.ro	67272	67272	0	0.0
			.dynamic	592	592	0	0.0
			.got	4336	4336	0	0.0
			.init	27	27	0	0.0
			.init_array	752	752	0	0.0
			.rodata	198585	198585	0	0.0
			.text	1880962	1881154	192	0.0
	ota-provider-app	debug	(read only)	2061289	2061481	192	0.0
			(read/write)	140944	140944	0	0.0
			.bss	72768	72768	0	0.0
			.data	1768	1768	0	0.0
			.data.rel.ro	60616	60616	0	0.0
			.dynamic	608	608	0	0.0
			.got	4504	4504	0	0.0
			.init	27	27	0	0.0
			.init_array	648	648	0	0.0
			.rodata	178912	178912	0	0.0
			.text	1723762	1723954	192	0.0
	ota-requestor-app	debug	(read only)	2090273	2090465	192	0.0
			(read/write)	143720	143720	0	0.0
			.bss	73440	73440	0	0.0
			.data	1992	1992	0	0.0
			.data.rel.ro	62648	62648	0	0.0
			.dynamic	592	592	0	0.0
			.got	4344	4344	0	0.0
			.init	27	27	0	0.0
			.init_array	672	672	0	0.0
			.rodata	175008	175008	0	0.0
			.text	1755186	1755378	192	0.0
	shell	debug	(read only)	2566777	2566985	208	0.0
			(read/write)	199800	199800	0	0.0
			.bss	115752	115752	0	0.0
			.data	1376	1376	0	0.0
			.data.rel.ro	76904	76904	0	0.0
			.dynamic	608	608	0	0.0
			.got	4192	4192	0	0.0
			.init	27	27	0	0.0
			.init_array	936	936	0	0.0
			.rodata	221746	221746	0	0.0
			.text	2182082	2182290	208	0.0
	thermostat-no-ble	arm64	(read only)	2352844	2352956	112	0.0
			(read/write)	176289	176289	0	0.0
			.bss	87585	87585	0	0.0
			.data	1520	1520	0	0.0
			.data.rel.ro	79384	79384	0	0.0
			.dynamic	560	560	0	0.0
			.got	4768	4768	0	0.0
			.init	24	24	0	0.0
			.init_array	376	376	0	0.0
			.rodata	147148	147148	0	0.0
			.text	1975680	1975792	112	0.0
	tv-app	debug	(read only)	2852769	2852977	208	0.0
			(read/write)	278752	278752	0	0.0
			.bss	190712	190712	0	0.0
			.data	4672	4672	0	0.0
			.data.rel.ro	77096	77096	0	0.0
			.dynamic	592	592	0	0.0
			.got	4720	4720	0	0.0
			.init	27	27	0	0.0
			.init_array	928	928	0	0.0
			.rodata	221009	221009	0	0.0
			.text	2448194	2448402	208	0.0
	tv-casting-app	debug	(read only)	5415481	5415673	192	0.0
			(read/write)	224992	224992	0	0.0
			.bss	78328	78328	0	0.0
			.data	2368	2368	0	0.0
			.data.rel.ro	138088	138088	0	0.0
			.dynamic	608	608	0	0.0
			.got	4728	4728	0	0.0
			.init	27	27	0	0.0
			.init_array	864	864	0	0.0
			.rodata	339521	339521	0	0.0
			.text	4715362	4715554	192	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2420632	2420632	0	0.0
			.bss	202668	202668	0	0.0
			.data	5872	5872	0	0.0
			.text	1383276	1383276	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1180991	1180991	0	0.0
			bss	138376	138376	0	0.0
			rodata	153064	153064	0	0.0
			text	810676	810676	0	0.0
p6	all-clusters-app	default	(read/write)	2538992	2538992	0	0.0
			.bss	136176	136176	0	0.0
			.data	2808	2808	0	0.0
			.text	1497256	1497256	0	0.0
	light-app	default	(read/write)	2425424	2425424	0	0.0
			.bss	129488	129488	0	0.0
			.data	2608	2608	0	0.0
			.text	1383688	1383688	0	0.0
	lock-app	default	(read/write)	2436144	2436144	0	0.0
			.bss	129304	129304	0	0.0
			.data	2568	2568	0	0.0
			.text	1394408	1394408	0	0.0
telink	light-switch-app	tlsr9518adk80d	(read/write)	782680	782688	8	0.0
			bss	70608	70608	0	0.0
			noinit	40416	40416	0	0.0
			text	553486	553490	4	0.0
	lighting-app	tlsr9518adk80d	(read/write)	802772	802772	0	0.0
			bss	70864	70864	0	0.0
			noinit	40416	40416	0	0.0
			text	570252	570256	4	0.0