Update ControlHostingView's hostingController to wrap subview

[joannaquu]

Platforms Impacted

• iOS
• macOS

Description of changes

#1690 deprecated FluentUIHostingController in iOS 16, which removed #759, a change that fixed an issue where UIHostingController didn't resize when the subviews changed. This caused a bug with MSFAvatarGroup where the VoiceOver frame would not wrap the entire avatarGroup when a new avatar was added. With iOS 16, setting the UIHostingController's sizingOptions fixes this issue.

Binary change

Total increase: 1,888 bytes
Total decrease: 0 bytes

File	Before	After	Delta
Total	46,571,392 bytes	46,573,280 bytes	⚠️ 1,888 bytes

Full breakdown

File	Before	After	Delta
ControlHostingView.o	121,248 bytes	122,984 bytes	⚠️ 1,736 bytes
__.SYMDEF	2,883,288 bytes	2,883,440 bytes	⚠️ 152 bytes

Verification

Visual Verification

Before	After

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=#1831