test: Use XCTestExpectation for User (#5848) #41

Job	Run time
Sentry/HybridSDK	1m 54s
Sentry static ios	3m 20s
Sentry dynamic macos	2m 47s
Sentry dynamic ios	2m 47s
Sentry dynamic watchos	2m 30s
SentrySwiftUI static macos	1m 36s
Sentry static tvos	2m 22s
SentrySwiftUI static ios	1m 53s
Sentry static watchos	2m 55s
Sentry dynamic tvos	3m 1s
SentrySwiftUI dynamic ios	2m 8s
Sentry static macos	2m 49s
SentrySwiftUI dynamic macos	1m 10s
SentrySwiftUI static tvos	1m 49s
SentrySwiftUI static watchos	1m 26s
SentrySwiftUI dynamic watchos	1m 32s
SentrySwiftUI dynamic tvos	1m 59s
	37m 58s

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