Update `AddScopes` to include previously requested `tokenClaims` in the… #865

Job	Run time
spm-build-test (macos-15, iphonesimulator)	3m 40s
spm-build-test (macos-15, macosx)	2m 53s
pod-lib-lint (macos-13, GoogleSignIn.podspec)	12m 40s
pod-lib-lint (macos-13, GoogleSignIn.podspec, --use-static-frameworks)	17m 52s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec, --use-static-frameworks)	12m 49s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec)	15m 26s
	1h 5m 20s

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