Start validating the sessionUserInfo type. #351

Job	Run time
swift (debug)	4m 8s
xcodebuild (ios, Debug)	5m 58s
swift (release)	4m 8s
xcodebuild (ios, Release)	4m 54s
xcodebuild (macos, Debug)	4m 16s
xcodebuild (macos, Release)	4m 21s
xcodebuild (tvos, Debug)	4m 33s
xcodebuild (tvos, Release)	5m 1s
xcodebuild (visionos, Debug)	4m 59s
xcodebuild (visionos, Release)	5m 16s
xcodebuild (watchos, Debug)	1m 24s
xcodebuild (watchos, Release)	1m 38s
	50m 36s

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