Use work helper with CASE handle sigma3

[mlepage-google]

WorkHelper was introduced to help with CASESession::SendSigma3. Now use it to help with CASESession::HandleSigma3.

Part of issue #26280.

[github-actions]

PR #26300: Size comparison from 77d72a8 to 5a01f6b

Increases above 0.2%:

platform	target	config	section	77d72a8	5a01f6b	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_str	3059490	3081523	22033	0.7
			.strtab	481887	485135	3248	0.7
			.symtab	287248	287952	704	0.2

Increases (1 build for cc32xx)

platform	target	config	section	77d72a8	5a01f6b	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	(read only)	602714	603514	800	0.1
			.debug_aranges	103664	103792	128	0.1
			.debug_frame	350552	350992	440	0.1
			.debug_info	19521972	19537458	15486	0.1
			.debug_line	2682751	2684446	1695	0.1
			.debug_loclists	1506147	1509070	2923	0.2
			.debug_rnglists	96278	96391	113	0.1
			.debug_str	3059490	3081523	22033	0.7
			.rodata	104250	104282	32	0.0
			.strtab	481887	485135	3248	0.7
			.symtab	287248	287952	704	0.2
			.text	496340	497108	768	0.2

Decreases (1 build for cc32xx)

platform	target	config	section	77d72a8	5a01f6b	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_abbrev	956984	956937	-47	-0.0

Full report (1 build for cc32xx)

platform	target	config	section	77d72a8	5a01f6b	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
			(read only)	602714	603514	800	0.1
			(read/write)	204156	204156	0	0.0
			.ARM.attributes	44	44	0	0.0
			.ARM.exidx	8	8	0	0.0
			.bss	197568	197568	0	0.0
			.comment	206	206	0	0.0
			.data	1468	1468	0	0.0
			.debug_abbrev	956984	956937	-47	-0.0
			.debug_aranges	103664	103792	128	0.1
			.debug_frame	350552	350992	440	0.1
			.debug_info	19521972	19537458	15486	0.1
			.debug_line	2682751	2684446	1695	0.1
			.debug_line_str	513	513	0	0.0
			.debug_loc	33340	33340	0	0.0
			.debug_loclists	1506147	1509070	2923	0.2
			.debug_ranges	4984	4984	0	0.0
			.debug_rnglists	96278	96391	113	0.1
			.debug_str	3059490	3081523	22033	0.7
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	104250	104282	32	0.0
			.shstrtab	265	265	0	0.0
			.stack	2048	2048	0	0.0
			.strtab	481887	485135	3248	0.7
			.symtab	287248	287952	704	0.2
			.text	496340	497108	768	0.2

[github-actions]

PR #26300: Size comparison from 77d72a8 to 4445d27

Increases (4 builds for mbed, nrfconnect)

platform	target	config	section	77d72a8	4445d27	change	% change
mbed	lock-app	CY8CPROTO_062_4343W+release	(read/write)	2494568	2495016	448	0.0
			.text	1457252	1457700	448	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1175616	1176396	780	0.1
			rodata	132864	132892	28	0.0
			text	806424	807176	752	0.1
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read/write)	1120852	1121584	732	0.1
			rodata	109684	109712	28	0.0
			text	775816	776512	696	0.1
	all-clusters-app	nrf7002dk_nrf5340_cpuapp	(read/write)	1435216	1435932	716	0.0
			rodata	228880	228908	28	0.0
			text	776960	777648	688	0.1

Full report (4 builds for mbed, nrfconnect)

platform	target	config	section	77d72a8	4445d27	change	% change
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2494568	2495016	448	0.0
			.bss	216296	216296	0	0.0
			.data	5144	5144	0	0.0
			.text	1457252	1457700	448	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read only)	4	4	0	0.0
			(read/write)	1175616	1176396	780	0.1
			bss	155593	155593	0	0.0
			rodata	132864	132892	28	0.0
			text	806424	807176	752	0.1
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read only)	4	4	0	0.0
			(read/write)	1120852	1121584	732	0.1
			bss	154749	154749	0	0.0
			rodata	109684	109712	28	0.0
			text	775816	776512	696	0.1
	all-clusters-app	nrf7002dk_nrf5340_cpuapp	(read only)	4	4	0	0.0
			(read/write)	1435216	1435932	716	0.0
			bss	135333	135333	0	0.0
			rodata	228880	228908	28	0.0
			text	776960	777648	688	0.1