[ damus-io/damus ] Configure UI to be in compatibility mode

This temporarily addresses iOS 26 UI issues by setting a UI

configuration called "compatibility mode" until we implement full iOS 26

support.

See https://developer.apple.com/documentation/BundleResources/Information-Property-List/UIDesignRequiresCompatibility

Furthermore, it addresses one remaining UI issue with the timeline top

padding by altering the padding calculation for iOS 26 targets.

https://github.com/damus-io/damus/commit/02296d77524020b44b751ec1426af4d155d55334