Platforms Impacted

• iOS
• visionOS
• macOS

Description of changes

#2211 caused a new warning ("Variable allowOSHint was never mutated, consider changing to let constant"), which our current tooling does not catch. That should be fixed, but in the meantime this at least fixes the warning.

Verification

Code builds with no warnings.

Pull request checklist

This PR has considered:

• Light and Dark appearances
• iOS supported versions (all major versions greater than or equal current target deployment version)
• VoiceOver and Keyboard Accessibility
• Internationalization and Right to Left layouts
• Different resolutions (1x, 2x, 3x)
• Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
• iPad Pointer interaction
• SwiftUI consumption (validation or new demo scenarios needed)
• Objective-C exposure (provide it only if needed)

Microsoft Reviewers: Open in CodeFlow