Call updateAppearance in BadgeField

[joannaquu]

Platforms Impacted

• iOS
• macOS

Description of changes

When #1843 was checked in, it removed calls to set the BadgeField's colors and fonts. This PR adds a call to updateAppearance so that tokens can be set on init.

Binary change

Total increase: 64 bytes
Total decrease: 0 bytes

File	Before	After	Delta
Total	46,915,960 bytes	46,916,024 bytes	⚠️ 64 bytes

Full breakdown

File	Before	After	Delta
BadgeField.o	961,144 bytes	961,208 bytes	⚠️ 64 bytes

Verification

Visual Verification

No visual changes

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: codeflow:open?pullrequest=#1852