[v9]: Replace custom Platform & PlatformChecker with package platform #3322

Job	Run time
macos \| stable	1m 24s
cancel-previous-workflow	3s
macos \| beta	1m 58s
linux \| stable	1m 52s
linux \| beta	2m 24s
windows \| stable	4m 37s
windows \| beta	3m 58s
analyze / package-analysis	2m 1s
analyze / cancel-previous-workflow	2s
analyze / analyze	1m 40s
	19m 59s

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