Create CHIPAttestationTrustStoreBridge when we know we have PAA certs.

[bzbarsky-apple]

Fixes #17746

Problem

We end up with a field marked nullable that should never be nil.

Change overview

Initialize it in the constructor so it's never nil. This requires creating the containing object somewhat later.

Testing

Should compile and pass clang-tidy.

[github-actions]

PR #17783: Size comparison from 6c54ab8 to 9a44d99

Full report (32 builds for cc13x2_26x2, cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)

platform	target	config	section	6c54ab8	9a44d99	change	% change
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	688215	688215	0	0.0
			(read/write)	163824	163824	0	0.0
			.bss	75020	75020	0	0.0
			.data	3396	3396	0	0.0
			.rodata	101583	101583	0	0.0
			.text	586152	586152	0	0.0
	lock-ftd	LP_CC2652R7	(read only)	688783	688783	0	0.0
			(read/write)	154568	154568	0	0.0
			.bss	73388	73388	0	0.0
			.data	3220	3220	0	0.0
			.rodata	103175	103175	0	0.0
			.text	585124	585124	0	0.0
	lock-mtd	LP_CC2652R7	(read only)	637535	637535	0	0.0
			(read/write)	146188	146188	0	0.0
			.bss	69108	69108	0	0.0
			.data	3220	3220	0	0.0
			.rodata	103055	103055	0	0.0
			.text	533988	533988	0	0.0
	pump-app	LP_CC2652R7	(read only)	661635	661635	0	0.0
			(read/write)	182916	182916	0	0.0
			.bss	73564	73564	0	0.0
			.data	3252	3252	0	0.0
			.rodata	80371	80371	0	0.0
			.text	580784	580784	0	0.0
	pump-controller-app	LP_CC2652R7	(read only)	654523	654523	0	0.0
			(read/write)	189820	189820	0	0.0
			.bss	73612	73612	0	0.0
			.data	3216	3216	0	0.0
			.rodata	83395	83395	0	0.0
			.text	570648	570648	0	0.0
cyw30739	light	cyw930739m2evb_01	(read/write)	626770	626770	0	0.0
			.app_xip_area	529648	529648	0	0.0
			.bss	79780	79780	0	0.0
			.data	692	692	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	lock	cyw930739m2evb_01	(read/write)	621314	621314	0	0.0
			.app_xip_area	525664	525664	0	0.0
			.bss	78340	78340	0	0.0
			.data	656	656	0	0.0
			.rodata	0	0	0	0.0
			.text	0	0	0	0.0
	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	574150	574150	0	0.0
			.app_xip_area	468856	468856	0	0.0
			.bss	87688	87688	0	0.0
			.data	568	568	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read only)	907612	907612	0	0.0
			(read/write)	134908	134908	0	0.0
			.bss	132864	132864	0	0.0
			.data	2044	2044	0	0.0
			.text	907604	907604	0	0.0
		BRD4161A+rpc	(read only)	942028	942028	0	0.0
			(read/write)	151592	151592	0	0.0
			.bss	149344	149344	0	0.0
			.data	2248	2248	0	0.0
			.text	942020	942020	0	0.0
	window-app	BRD4161A	(read only)	844996	844996	0	0.0
			(read/write)	132996	132996	0	0.0
			.bss	131040	131040	0	0.0
			.data	1956	1956	0	0.0
			.text	844988	844988	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	999324	999324	0	0.0
			(read/write)	1473618	1473618	0	0.0
			.dram0.bss	68176	68176	0	0.0
			.dram0.data	14428	14428	0	0.0
			.flash.rodata	206568	206568	0	0.0
			.flash.text	999324	999324	0	0.0
			.iram0.text	62020	62020	0	0.0
		m5stack	(read only)	1053619	1053619	0	0.0
			(read/write)	475616	475616	0	0.0
			.dram0.bss	73696	73696	0	0.0
			.dram0.data	34168	34168	0	0.0
			.flash.rodata	235916	235916	0	0.0
			.flash.text	1048235	1048235	0	0.0
			.iram0.text	123107	123107	0	0.0
k32w	light	k32w061+release	(read/write)	688712	688712	0	0.0
			.bss	81112	81112	0	0.0
			.data	2000	2000	0	0.0
			.text	599800	599800	0	0.0
	lock	k32w061+release	(read/write)	729572	729572	0	0.0
			.bss	81520	81520	0	0.0
			.data	1960	1960	0	0.0
			.text	640292	640292	0	0.0
linux	all-clusters-app	debug	(read only)	2734441	2734441	0	0.0
			(read/write)	172808	172808	0	0.0
			.bss	83168	83168	0	0.0
			.data	1984	1984	0	0.0
			.data.rel.ro	81576	81576	0	0.0
			.dynamic	608	608	0	0.0
			.got	4464	4464	0	0.0
			.init	27	27	0	0.0
			.init_array	992	992	0	0.0
			.rodata	233797	233797	0	0.0
			.text	2326018	2326018	0	0.0
	bridge-app	debug+rpc	(read only)	1890425	1890425	0	0.0
			(read/write)	120240	120240	0	0.0
			.bss	71168	71168	0	0.0
			.data	3424	3424	0	0.0
			.data.rel.ro	40328	40328	0	0.0
			.dynamic	592	592	0	0.0
			.got	4032	4032	0	0.0
			.init	27	27	0	0.0
			.init_array	680	680	0	0.0
			.rodata	159537	159537	0	0.0
			.text	1608322	1608322	0	0.0
	chip-tool	debug	(read only)	8359621	8359621	0	0.0
			(read/write)	472624	472624	0	0.0
			.bss	22592	22592	0	0.0
			.data	1136	1136	0	0.0
			.data.rel.ro	442648	442648	0	0.0
			.dynamic	624	624	0	0.0
			.got	4952	4952	0	0.0
			.init	27	27	0	0.0
			.init_array	648	648	0	0.0
			.rodata	452949	452949	0	0.0
			.text	6825109	6825109	0	0.0
	chip-tool-no-interactive-ipv6only	arm64	(read only)	8221580	8221580	0	0.0
			(read/write)	537745	537745	0	0.0
			.bss	40897	40897	0	0.0
			.data	1192	1192	0	0.0
			.data.rel.ro	477752	477752	0	0.0
			.dynamic	560	560	0	0.0
			.got	14080	14080	0	0.0
			.init	24	24	0	0.0
			.init_array	184	184	0	0.0
			.rodata	419388	419388	0	0.0
			.text	6588244	6588244	0	0.0
	lighting-app	debug+rpc	(read only)	2325881	2325881	0	0.0
			(read/write)	151192	151192	0	0.0
			.bss	73216	73216	0	0.0
			.data	1984	1984	0	0.0
			.data.rel.ro	70248	70248	0	0.0
			.dynamic	608	608	0	0.0
			.got	4320	4320	0	0.0
			.init	27	27	0	0.0
			.init_array	784	784	0	0.0
			.rodata	183633	183633	0	0.0
			.text	1975826	1975826	0	0.0
	lock-app	debug	(read only)	2206265	2206265	0	0.0
			(read/write)	145576	145576	0	0.0
			.bss	71808	71808	0	0.0
			.data	1504	1504	0	0.0
			.data.rel.ro	66600	66600	0	0.0
			.dynamic	592	592	0	0.0
			.got	4312	4312	0	0.0
			.init	27	27	0	0.0
			.init_array	736	736	0	0.0
			.rodata	192129	192129	0	0.0
			.text	1854354	1854354	0	0.0
	ota-provider-app	debug	(read only)	2059001	2059001	0	0.0
			(read/write)	138824	138824	0	0.0
			.bss	71232	71232	0	0.0
			.data	1672	1672	0	0.0
			.data.rel.ro	60152	60152	0	0.0
			.dynamic	608	608	0	0.0
			.got	4480	4480	0	0.0
			.init	27	27	0	0.0
			.init_array	640	640	0	0.0
			.rodata	174171	174171	0	0.0
			.text	1727538	1727538	0	0.0
	ota-requestor-app	debug	(read only)	2090217	2090217	0	0.0
			(read/write)	141600	141600	0	0.0
			.bss	71872	71872	0	0.0
			.data	1928	1928	0	0.0
			.data.rel.ro	62184	62184	0	0.0
			.dynamic	592	592	0	0.0
			.got	4320	4320	0	0.0
			.init	27	27	0	0.0
			.init_array	664	664	0	0.0
			.rodata	170492	170492	0	0.0
			.text	1760946	1760946	0	0.0
	shell	debug	(read only)	2560257	2560257	0	0.0
			(read/write)	196776	196776	0	0.0
			.bss	113768	113768	0	0.0
			.data	1360	1360	0	0.0
			.data.rel.ro	75912	75912	0	0.0
			.dynamic	592	592	0	0.0
			.got	4184	4184	0	0.0
			.init	27	27	0	0.0
			.init_array	920	920	0	0.0
			.rodata	215538	215538	0	0.0
			.text	2183026	2183026	0	0.0
	thermostat-no-ble	arm64	(read only)	2367676	2367676	0	0.0
			(read/write)	174337	174337	0	0.0
			.bss	86097	86097	0	0.0
			.data	1488	1488	0	0.0
			.data.rel.ro	78984	78984	0	0.0
			.dynamic	560	560	0	0.0
			.got	4744	4744	0	0.0
			.init	24	24	0	0.0
			.init_array	368	368	0	0.0
			.rodata	145468	145468	0	0.0
			.text	1993184	1993184	0	0.0
	tv-app	debug	(read only)	2844401	2844401	0	0.0
			(read/write)	276472	276472	0	0.0
			.bss	189112	189112	0	0.0
			.data	4640	4640	0	0.0
			.data.rel.ro	76488	76488	0	0.0
			.dynamic	592	592	0	0.0
			.got	4696	4696	0	0.0
			.init	27	27	0	0.0
			.init_array	920	920	0	0.0
			.rodata	215947	215947	0	0.0
			.text	2446210	2446210	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2411508	2411508	0	0.0
			.bss	205660	205660	0	0.0
			.data	5848	5848	0	0.0
			.text	1374108	1374108	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1179243	1179243	0	0.0
			bss	141784	141784	0	0.0
			rodata	150204	150204	0	0.0
			text	808616	808616	0	0.0
p6	all-clusters-app	default	(read/write)	2526920	2526920	0	0.0
			.bss	139040	139040	0	0.0
			.data	2784	2784	0	0.0
			.text	1485184	1485184	0	0.0
	light-app	default	(read/write)	2418680	2418680	0	0.0
			.bss	132520	132520	0	0.0
			.data	2584	2584	0	0.0
			.text	1376944	1376944	0	0.0
	lock-app	default	(read/write)	2422856	2422856	0	0.0
			.bss	132320	132320	0	0.0
			.data	2544	2544	0	0.0
			.text	1381120	1381120	0	0.0
telink	lighting-app	tlsr9518adk80d	(read/write)	807864	807864	0	0.0
			bss	75216	75216	0	0.0
			noinit	40416	40416	0	0.0
			text	571682	571682	0	0.0