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Description
SwiftUI preview support for FIAM was added in #8351. However, it was only tested for iOS and broke the tvOS CI because of using unsupported tvOS colors in SwiftUIPreviewHelpers.swift for backgroundColor, primaryButtonBackgroundColor, and secondaryButtonBackgroundColor. A placeholder fix was added in #8403 to fix CI.
The default colors still need to be reviewed in the sample app at FirebaseInAppMessaging/Swift/Tests/Integration/FIAMSwiftUI/ and updated to work well for both iOS and tvOS previews.
Consider an additional check within these helpers that returns a light or dark color (for tvOS) based on interface style.