Invalidate child store subscriptions #6305

Job	Run time
xcodebuild (16) (test, MACOS, 16.2)	2m 31s
xcodebuild (16) (test, IOS, 16.2)	4m 42s
xcodebuild (16) (IOS, 16.2)	4m 17s
xcodebuild (16) (MACOS, 16.2)	2m 57s
xcodebuild (15) (test, TVOS, 15.4)	4m 7s
xcodebuild (15) (test, MAC_CATALYST, 15.4)	5m 32s
xcodebuild (15) (test, MACOS, 15.4)	5m 1s
xcodebuild (15) (test, IOS, 15.4)	7m 39s
Check Macro Compatibility	3m 31s
xcodebuild (15) (MACOS, 15.2)	2m 56s
xcodebuild (15) (IOS, 15.2)	4m 51s
Examples	4m 31s
xcodebuild (15) (test, WATCHOS, 15.4)	10m 57s
Library (evolution)	3m 49s
Examples	16m 7s
Library (evolution)	3m 49s
xcodebuild (16) (test, IOS, 16.2)	4m 42s
Check Macro Compatibility	3m 31s
xcodebuild (16) (test, MACOS, 16.2)	2m 31s
xcodebuild (15) (test, IOS, 15.4)	7m 39s
xcodebuild (15) (test, TVOS, 15.4)	4m 7s
xcodebuild (16) (MACOS, 16.2)	2m 57s
xcodebuild (15) (IOS, 15.2)	4m 51s
xcodebuild (15) (test, MACOS, 15.4)	5m 1s
xcodebuild (15) (test, WATCHOS, 15.4)	10m 57s
xcodebuild (15) (MACOS, 15.2)	2m 56s
xcodebuild (16) (IOS, 16.2)	4m 17s
xcodebuild (15) (test, MAC_CATALYST, 15.4)	5m 32s
	2h 26m 18s

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