Mark class property initializers as outside of CFA containers #35549

Job	Run time
format	23s
lint	58s
misc	31s
knip	37s
typecheck	41s
smoke	57s
self-check	1m 32s
baselines	9m 34s
coverage	11m 53s
Test Node 24 on windows-latest	10m 42s
package-size	1m 31s
browser-integration	1m 36s
Test Node 14 on windows-latest	14m 40s
Test Node lts/* on ubuntu-latest with --no-bundle	11m 11s
Test Node 14 on ubuntu-latest	11m 36s
Test Node 24 on ubuntu-latest	8m 27s
required	3s
	1h 26m 52s

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