Enable -Wconversion in the java server.

[bzbarsky-apple]

Note #25403 tracking whether this is in fact the right fix.

[github-actions]

PR #25405: Size comparison from e434c6a to 30d57ca

Increases (3 builds for bl702, cc13x2_26x2, qpg)

platform	target	config	section	e434c6a	30d57ca	change	% change
bl702	lighting-app	bl702+rpc	.debug_info	45013159	45013160	1	0.0
			.text	1030920	1030922	2	0.0
cc13x2_26x2	lock-ftd	LP_CC2652R7	(read/write)	171448	171456	8	0.0
qpg	lighting-app	qpg6105+debug	(read/write)	1151676	1151684	8	0.0
			.text	598772	598780	8	0.0

Decreases (4 builds for bl602, cc13x2_26x2, cc32xx)

platform	target	config	section	e434c6a	30d57ca	change	% change
bl602	lighting-app	bl602	.text	1026862	1026860	-2	-0.0
		bl602+rpc	.text	1057796	1057794	-2	-0.0
cc13x2_26x2	lock-ftd	LP_CC2652R7	(read only)	676991	676983	-8	-0.0
			.text	599800	599792	-8	-0.0
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_info	2026292	20262923	-1	-0.0

Full report (19 builds for bl602, bl702, cc13x2_26x2, cc32xx, k32w, linux, qpg)

platform	target	config	section	e434c6a	30d57ca	change	% change
bl602	lighting-app	bl602	(read/write)	1350806	1350806	0	0.0
			.bss	94690	94690	0	0.0
			.data	9744	9744	0	0.0
			.text	1026862	1026860	-2	-0.0
		bl602+rpc	(read/write)	1396254	1396254	0	0.0
			.bss	102738	102738	0	0.0
			.data	10136	10136	0	0.0
			.text	1057796	1057794	-2	-0.0
bl702	lighting-app	bl702		0	0	0	0.0
			(read only)	3358	3358	0	0.0
			(read/write)	1189075	1189075	0	0.0
			.bleromro	6342	6342	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	292	292	0	0.0
			.bss	69785	69785	0	0.0
			.bss_psram	30064	30064	0	0.0
			.comment	48	48	0	0.0
			.data	4072	4072	0	0.0
			.debug_abbrev	1551870	1551870	0	0.0
			.debug_aranges	134304	134304	0	0.0
			.debug_frame	492456	492456	0	0.0
			.debug_info	40601128	40601128	0	0.0
			.debug_line	5278983	5278983	0	0.0
			.debug_loc	3418290	3418290	0	0.0
			.debug_ranges	372480	372480	0	0.0
			.debug_str	3580726	3580726	0	0.0
			.hbn	536	536	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	144	144	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	107904	107904	0	0.0
			.rsvd	2960	2960	0	0.0
			.sha_ocram	72	72	0	0.0
			.shstrtab	304	304	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	574866	574866	0	0.0
			.symtab	173744	173744	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3358	3358	0	0.0
			.text	956150	956150	0	0.0
		bl702+rpc		0	0	0	0.0
			(read only)	3358	3358	0	0.0
			(read/write)	1279055	1279055	0	0.0
			.bleromro	6342	6342	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	292	292	0	0.0
			.bss	77833	77833	0	0.0
			.bss_psram	30320	30320	0	0.0
			.comment	48	48	0	0.0
			.data	4616	4616	0	0.0
			.debug_abbrev	1700065	1700065	0	0.0
			.debug_aranges	142544	142544	0	0.0
			.debug_frame	520144	520144	0	0.0
			.debug_info	45013159	45013160	1	0.0
			.debug_line	5677745	5677745	0	0.0
			.debug_loc	3614914	3614914	0	0.0
			.debug_ranges	396256	396256	0	0.0
			.debug_str	3984263	3984263	0	0.0
			.hbn	536	536	0	0.0
			.hbn_noinit	260	260	0	0.0
			.init	342	342	0	0.0
			.init_array	160	160	0	0.0
			.psram	0	0	0	0.0
			.riscv.attributes	47	47	0	0.0
			.rodata	122016	122016	0	0.0
			.rsvd	2960	2960	0	0.0
			.sha_ocram	72	72	0	0.0
			.shstrtab	304	304	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	635883	635883	0	0.0
			.symtab	192080	192080	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3358	3358	0	0.0
			.text	1030920	1030922	2	0.0
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	680743	680743	0	0.0
			(read/write)	170328	170328	0	0.0
			.bss	80764	80764	0	0.0
			.data	3352	3352	0	0.0
			.rodata	88527	88527	0	0.0
			.text	591900	591900	0	0.0
	all-clusters-minimal-app	LP_CC2652R7	(read only)	643887	643887	0	0.0
			(read/write)	157432	157432	0	0.0
			.bss	79964	79964	0	0.0
			.data	3352	3352	0	0.0
			.rodata	78399	78399	0	0.0
			.text	565168	565168	0	0.0
	lock-ftd	LP_CC2652R7	(read only)	676991	676983	-8	-0.0
			(read/write)	171448	171456	8	0.0
			.bss	78220	78220	0	0.0
			.data	3316	3316	0	0.0
			.rodata	76711	76711	0	0.0
			.text	599800	599792	-8	-0.0
	lock-mtd	LP_CC2652R7	(read only)	663739	663739	0	0.0
			(read/write)	179956	179956	0	0.0
			.bss	73476	73476	0	0.0
			.data	3316	3316	0	0.0
			.rodata	103523	103523	0	0.0
			.text	559736	559736	0	0.0
	pump-app	LP_CC2652R7	(read only)	690195	690195	0	0.0
			(read/write)	158988	158988	0	0.0
			.bss	78196	78196	0	0.0
			.data	3280	3280	0	0.0
			.rodata	91083	91083	0	0.0
			.text	598632	598632	0	0.0
	pump-controller-app	LP_CC2652R7	(read only)	675147	675147	0	0.0
			(read/write)	174172	174172	0	0.0
			.bss	78332	78332	0	0.0
			.data	3304	3304	0	0.0
			.rodata	86971	86971	0	0.0
			.text	587696	587696	0	0.0
	shell	LP_CC2652R7	(read only)	672198	672198	0	0.0
			(read/write)	180944	180944	0	0.0
			.bss	82836	82836	0	0.0
			.data	3348	3348	0	0.0
			.rodata	85430	85430	0	0.0
			.text	586456	586456	0	0.0
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
			(read only)	643465	643465	0	0.0
			(read/write)	203688	203688	0	0.0
			.ARM.attributes	44	44	0	0.0
			.ARM.exidx	8	8	0	0.0
			.bss	197088	197088	0	0.0
			.comment	194	194	0	0.0
			.data	1480	1480	0	0.0
			.debug_abbrev	930213	930213	0	0.0
			.debug_aranges	87336	87336	0	0.0
			.debug_frame	300024	300024	0	0.0
			.debug_info	2026292	20262923	-1	-0.0
			.debug_line	2657815	2657815	0	0.0
			.debug_loc	2800026	2800026	0	0.0
			.debug_ranges	282240	282240	0	0.0
			.debug_str	3023883	3023883	0	0.0
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	105929	105929	0	0.0
			.shstrtab	232	232	0	0.0
			.stab	204	204	0	0.0
			.stabstr	441	441	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	378514	378514	0	0.0
			.symtab	256560	256560	0	0.0
			.text	535412	535412	0	0.0
k32w	contact	k32w0+release	(read/write)	671068	671068	0	0.0
			.bss	65276	65276	0	0.0
			.data	2204	2204	0	0.0
			.text	572188	572188	0	0.0
	light	k32w0+release	(read/write)	670120	670120	0	0.0
			.bss	64948	64948	0	0.0
			.data	2192	2192	0	0.0
			.text	571580	571580	0	0.0
	lock	k32w0+release	(read/write)	626564	626564	0	0.0
			.bss	63084	63084	0	0.0
			.data	2136	2136	0	0.0
			.text	546328	546328	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	12138116	12138116	0	0.0
			(read/write)	733448	733448	0	0.0
			.bss	34296	34296	0	0.0
			.data	3008	3008	0	0.0
			.data.rel.ro	675552	675552	0	0.0
			.dynamic	560	560	0	0.0
			.got	15376	15376	0	0.0
			.init	24	24	0	0.0
			.init_array	216	216	0	0.0
			.rodata	587140	587140	0	0.0
			.text	9810356	9810356	0	0.0
	thermostat-no-ble	arm64	(read only)	2519284	2519284	0	0.0
			(read/write)	145208	145208	0	0.0
			.bss	56344	56344	0	0.0
			.data	1784	1784	0	0.0
			.data.rel.ro	77688	77688	0	0.0
			.dynamic	560	560	0	0.0
			.got	5336	5336	0	0.0
			.init	24	24	0	0.0
			.init_array	432	432	0	0.0
			.rodata	150704	150704	0	0.0
			.text	2106272	2106272	0	0.0
qpg	lighting-app	qpg6105+debug	(read/write)	1151676	1151684	8	0.0
			.bss	99804	99804	0	0.0
			.data	852	852	0	0.0
			.text	598772	598780	8	0.0
	lock-app	qpg6105+debug	(read/write)	1118892	1118892	0	0.0
			.bss	96292	96292	0	0.0
			.data	864	864	0	0.0
			.text	565992	565992	0	0.0