refactor: Rename CloseSession to MarkSessionDefunct and add MarkSessi… #103678

Job	Run time
Build framework (macos-release, -sdk macosx -configuration Release)	19m 43s
Build framework (ios-release, -sdk iphoneos -configuration Release)	9m 10s
Build framework (tvos-debug, -sdk appletvos -configuration Debug)	7m 36s
Build framework (watchos-debug, -sdk watchos -configuration Debug)	17m 31s
Run framework tests (asan, -enableAddressSanitizer YES -enableUndefinedBehaviorSanitizer YES)	43m 30s
Run framework tests (tsan, -enableThreadSanitizer YES)	43m 36s
Run framework tests (leaks, ENABLE_LEAK_DETECTION=1)	35m 35s
	2h 56m 41s

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