Reducing delay between UDC requests from 1000ms to 100ms

[sharadb-amazon]

Fixes #25634

Change summary

The Matter spec says it may send up to 4 retries (5 total) for UDC at least 100ms apart. However, so far the delay in the SDK for each request was 1 second - this delays the subsequent on-network commissioning process by 5+ seconds. This PR reduces that delay (per UDC request) to the minimum delay prescribed by the spec. This should help reduce the cumulative delay from 5 sec to 500ms.

Testing

Tested using the Android tv-casting-app sending UDC requests to the Linux tv-app. Observed that the requests are now sent just 100ms apart.

[github-actions]

PR #25635: Size comparison from 3c6bed3 to 29ffd4f

Decreases (1 build for cc32xx)

platform	target	config	section	3c6bed3	29ffd4f	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL	.debug_info	20275631	20275630	-1	-0.0

Full report (1 build for cc32xx)

platform	target	config	section	3c6bed3	29ffd4f	change	% change
cc32xx	lock	CC3235SF_LAUNCHXL		0	0	0	0.0
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			.debug_info	20275631	20275630	-1	-0.0
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			.debug_ranges	283168	283168	0	0.0
			.debug_str	3026158	3026158	0	0.0
			.ramVecs	780	780	0	0.0
			.resetVecs	64	64	0	0.0
			.rodata	105993	105993	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
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			.symtab	256912	256912	0	0.0
			.text	536984	536984	0	0.0

[bzbarsky-apple]

This runs more of a risk that a temporary network disruption will make the whole thing fail, but sure.