Update `AddScopes` to include previously requested `tokenClaims` in the… #864

Job	Run time
spm-build-test (macos-15, macosx)	2m 19s
spm-build-test (macos-15, iphonesimulator)	2m 48s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec, --use-static-frameworks)	14m 25s
pod-lib-lint (macos-13, GoogleSignIn.podspec, --use-static-frameworks)	10m 14s
pod-lib-lint (macos-13, GoogleSignIn.podspec)	10m 4s
pod-lib-lint (macos-13, GoogleSignInSwiftSupport.podspec)	8m 51s
	48m 41s

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