Fix casting lifecycle issues

[chrisdecenzo]

Problem

• Fix Casting Video Player - client lifecycle issues #20137

Change overview

• generate a random nodeId for each casting app
• grab validated vid/pid from CommissioningDelegate rather than one from UDC request

Testing

• Tested using tv-casting-app and tv-app

[github-actions]

PR #20138: Size comparison from 9d2eeb0 to c6ea4f9

Increases (1 build for nrfconnect)

platform	target	config	section	9d2eeb0	c6ea4f9	change	% change
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	text	809772	809776	4	0.0

Full report (8 builds for efr32, mbed, nrfconnect)

platform	target	config	section	9d2eeb0	c6ea4f9	change	% change
efr32	lighting-app	BRD4161A	(read/write)	1080060	1080060	0	0.0
			.bss	132996	132996	0	0.0
			.data	2048	2048	0	0.0
			.text	944996	944996	0	0.0
		BRD4161A+rpc	(read/write)	1134356	1134356	0	0.0
			.bss	149676	149676	0	0.0
			.data	2260	2260	0	0.0
			.text	982400	982400	0	0.0
		BRD4161A+rs911x	(read/write)	942524	942524	0	0.0
			.bss	138712	138712	0	0.0
			.data	2048	2048	0	0.0
			.text	801744	801744	0	0.0
	lock-app	BRD4161A+wf200	(read/write)	1119568	1119568	0	0.0
			.bss	139144	139144	0	0.0
			.data	2060	2060	0	0.0
			.text	978344	978344	0	0.0
	window-app	BRD4161A	(read/write)	1065324	1065324	0	0.0
			.bss	133076	133076	0	0.0
			.data	2076	2076	0	0.0
			.text	930148	930148	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2447080	2447080	0	0.0
			.bss	213940	213940	0	0.0
			.data	5872	5872	0	0.0
			.text	1409724	1409724	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1172915	1172915	0	0.0
			bss	142884	142884	0	0.0
			rodata	141348	141348	0	0.0
			text	809772	809776	4	0.0
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read/write)	1153783	1153783	0	0.0
			bss	142120	142120	0	0.0
			rodata	133280	133280	0	0.0
			text	799484	799484	0	0.0