[Silabs] Remove groups cluster from endpoint 0 on our lighting-app zap configs

[jmartinez-silabs]

fixes #26065

TC_RR_1.1 was failing on the silabs lighting app. CHIP_CONFIG_MAX_GROUP_ENDPOINTS_PER_FABRIC is set to 1 by default and our lighting app had the groups cluster on endpoint 0 and endpoint 1.
You can define CHIP_CONFIG_MAX_GROUP_ENDPOINTS_PER_FABRIC to what your app needs, but more importantly, groups shouldn't be on endpoint 0. I believe it was used for some tests at the time.

This PR removes the groups cluster from endpoint 0.

[github-actions]

PR #26106: Size comparison from cdf3c61 to 0b553c1

Increases (1 build for qpg)

platform	target	config	section	cdf3c61	0b553c1	change	% change
qpg	lighting-app	qpg6105+debug	(read/write)	1166624	1166632	8	0.0
			.text	613724	613732	8	0.0

Full report (2 builds for qpg)

platform	target	config	section	cdf3c61	0b553c1	change	% change
qpg	lighting-app	qpg6105+debug	(read/write)	1166624	1166632	8	0.0
			.bss	99308	99308	0	0.0
			.data	856	856	0	0.0
			.text	613724	613732	8	0.0
	lock-app	qpg6105+debug	(read/write)	1136704	1136704	0	0.0
			.bss	94452	94452	0	0.0
			.data	860	860	0	0.0
			.text	583800	583800	0	0.0