[chip-tool] Regression from #22708. Revert chip::Platform::CopyString…

[vivien-apple]

… to memcpy (it previously uses to be strncpy which was confusing)

Problem

fix #23200

[github-actions]

PR #23231: Size comparison from b96f795 to e090b95

Increases (1 build for cc13x2_26x2)

platform	target	config	section	b96f795	e090b95	change	% change
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	677167	677175	8	0.0
			.text	587064	587072	8	0.0

Decreases (6 builds for bl602, bl702, cc13x2_26x2, nrfconnect, telink)

platform	target	config	section	b96f795	e090b95	change	% change
bl602	lighting-app	bl602	.text	1069120	1069118	-2	-0.0
bl702	lighting-app	bl702+rpc	.debug_info	41812027	41812026	-1	-0.0
			.text	1030504	1030502	-2	-0.0
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read/write)	174376	174368	-8	-0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	text	815708	815704	-4	-0.0
telink	light-switch-app	tlsr9518adk80d	text	553140	553136	-4	-0.0
	lighting-app	tlsr9518adk80d	(read/write)	811476	811468	-8	-0.0
			text	571358	571354	-4	-0.0

Full report (23 builds for bl602, bl702, cc13x2_26x2, k32w, linux, nrfconnect, qpg, telink)

platform	target	config	section	b96f795	e090b95	change	% change
bl602	lighting-app	bl602	(read/write)	1389710	1389710	0	0.0
			.bss	90729	90729	0	0.0
			.data	9928	9928	0	0.0
			.text	1069120	1069118	-2	-0.0
		bl602+rpc	(read/write)	1434934	1434934	0	0.0
			.bss	98161	98161	0	0.0
			.data	10312	10312	0	0.0
			.text	1100468	1100468	0	0.0
bl702	lighting-app	bl702	(read only)	3262	3262	0	0.0
			(read/write)	1188691	1188691	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	67102	67102	0	0.0
			.bss_psram	29696	29696	0	0.0
			.comment	48	48	0	0.0
			.data	4272	4272	0	0.0
			.debug_abbrev	1506865	1506865	0	0.0
			.debug_aranges	133136	133136	0	0.0
			.debug_frame	486600	486600	0	0.0
			.debug_info	37905413	37905413	0	0.0
			.debug_line	5256822	5256822	0	0.0
			.debug_loc	3367145	3367145	0	0.0
			.debug_ranges	359376	359376	0	0.0
			.debug_str	3457811	3457811	0	0.0
			.hbn	509	509	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	116744	116744	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	565071	565071	0	0.0
			.symtab	171664	171664	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	0	0	0	0.0
				957058	957058	0	0.0
		bl702+rpc	(read only)	3262	3262	0	0.0
			(read/write)	1284355	1284355	0	0.0
			.bleromro	6296	6296	0	0.0
			.bleromrw	124	124	0	0.0
			.boot2	688	688	0	0.0
			.bss	75150	75150	0	0.0
			.bss_psram	29936	29936	0	0.0
			.comment	48	48	0	0.0
			.data	4800	4800	0	0.0
			.debug_abbrev	1644410	1644410	0	0.0
			.debug_aranges	140640	140640	0	0.0
			.debug_frame	511972	511972	0	0.0
			.debug_info	41812027	41812026	-1	-0.0
			.debug_line	5631353	5631353	0	0.0
			.debug_loc	3559792	3559792	0	0.0
			.debug_ranges	381832	381832	0	0.0
			.debug_str	3853711	3853711	0	0.0
			.hbn	509	509	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	130136	130136	0	0.0
			.rsvd	3188	3188	0	0.0
			.shstrtab	293	293	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	624244	624244	0	0.0
			.symtab	189472	189472	0	0.0
			.tcm_data	36	36	0	0.0
			.tcmcode	3262	3262	0	0.0
			.text	0	0	0	0.0
				1030504	1030502	-2	-0.0
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	677167	677175	8	0.0
			(read/write)	174376	174368	-8	-0.0
			.bss	81236	81236	0	0.0
			.data	3380	3380	0	0.0
			.rodata	89791	89791	0	0.0
			.text	587064	587072	8	0.0
	all-clusters-minimal-app	LP_CC2652R7	(read only)	641423	641423	0	0.0
			(read/write)	158004	158004	0	0.0
			.bss	80508	80508	0	0.0
			.data	3380	3380	0	0.0
			.rodata	78927	78927	0	0.0
			.text	562176	562176	0	0.0
	lock-ftd	LP_CC2652R7	(read only)	675867	675867	0	0.0
			(read/write)	172828	172828	0	0.0
			.bss	78476	78476	0	0.0
			.data	3304	3304	0	0.0
			.rodata	77315	77315	0	0.0
			.text	598072	598072	0	0.0
	lock-mtd	LP_CC2652R7	(read only)	659623	659623	0	0.0
			(read/write)	184760	184760	0	0.0
			.bss	74164	74164	0	0.0
			.data	3304	3304	0	0.0
			.rodata	103135	103135	0	0.0
			.text	556008	556008	0	0.0
	pump-app	LP_CC2652R7	(read only)	687915	687915	0	0.0
			(read/write)	161500	161500	0	0.0
			.bss	78428	78428	0	0.0
			.data	3296	3296	0	0.0
			.rodata	90731	90731	0	0.0
			.text	596700	596700	0	0.0
	pump-controller-app	LP_CC2652R7	(read only)	672423	672423	0	0.0
			(read/write)	177104	177104	0	0.0
			.bss	78540	78540	0	0.0
			.data	3292	3292	0	0.0
			.rodata	86287	86287	0	0.0
			.text	585656	585656	0	0.0
	shell	LP_CC2652R7	(read only)	668198	668198	0	0.0
			(read/write)	185664	185664	0	0.0
			.bss	83556	83556	0	0.0
			.data	3376	3376	0	0.0
			.rodata	86502	86502	0	0.0
			.text	581380	581380	0	0.0
k32w	contact	k32w0+release	(read/write)	661284	661284	0	0.0
			.bss	77040	77040	0	0.0
			.data	2104	2104	0	0.0
			.text	563028	563028	0	0.0
	light	k32w0+release	(read/write)	671280	671280	0	0.0
			.bss	74816	74816	0	0.0
			.data	2060	2060	0	0.0
			.text	591676	591676	0	0.0
	lock	k32w0+release	(read/write)	633092	633092	0	0.0
			.bss	75600	75600	0	0.0
			.data	2080	2080	0	0.0
			.text	552684	552684	0	0.0
linux	chip-tool-ipv6only	arm64	(read only)	10429476	10429476	0	0.0
			(read/write)	706353	706353	0	0.0
			.bss	33953	33953	0	0.0
			.data	2768	2768	0	0.0
			.data.rel.ro	650632	650632	0	0.0
			.dynamic	560	560	0	0.0
			.got	13896	13896	0	0.0
			.init	24	24	0	0.0
			.init_array	208	208	0	0.0
			.rodata	518132	518132	0	0.0
			.text	8255780	8255780	0	0.0
	thermostat-no-ble	arm64	(read only)	2390524	2390524	0	0.0
			(read/write)	143633	143633	0	0.0
			.bss	55377	55377	0	0.0
			.data	1816	1816	0	0.0
			.data.rel.ro	77256	77256	0	0.0
			.dynamic	560	560	0	0.0
			.got	5176	5176	0	0.0
			.init	24	24	0	0.0
			.init_array	440	440	0	0.0
			.rodata	144436	144436	0	0.0
			.text	2003184	2003184	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1183451	1183451	0	0.0
			bss	144441	144441	0	0.0
			rodata	144396	144396	0	0.0
			text	815708	815704	-4	-0.0
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read/write)	1162119	1162119	0	0.0
			bss	143668	143668	0	0.0
			rodata	135968	135968	0	0.0
			text	803600	803600	0	0.0
qpg	lighting-app	qpg6105+debug	(read/write)	1148632	1148632	0	0.0
			.bss	110556	110556	0	0.0
			.data	832	832	0	0.0
			.text	595732	595732	0	0.0
	lock-app	qpg6105+debug	(read/write)	1113712	1113712	0	0.0
			.bss	106372	106372	0	0.0
			.data	836	836	0	0.0
			.text	560808	560808	0	0.0
telink	light-switch-app	tlsr9518adk80d	(read/write)	789364	789364	0	0.0
			bss	72480	72480	0	0.0
			noinit	43520	43520	0	0.0
			text	553140	553136	-4	-0.0
	lighting-app	tlsr9518adk80d	(read/write)	811476	811468	-8	-0.0
			bss	73328	73328	0	0.0
			noinit	43520	43520	0	0.0
			text	571358	571354	-4	-0.0
	ota-requestor-app	tlsr9518adk80d	(read/write)	819412	819412	0	0.0
			bss	74236	74236	0	0.0
			noinit	43520	43520	0	0.0
			text	577540	577540	0	0.0