Fixing view cutoff in iPad when showing DrawerController

[sophialee0416]

Platforms Impacted

• iOS
• macOS

Description of changes

On iPad, there was a noticeable view cut off when using the UIPopupMenuController. Turns out this was happening because the contentView would cut into the arrow. Setting isLayoutMarginsRelativeArrangement to true fixes the view from getting cut off.

Binary change

(how is our binary size impacted -- see https://github.com/microsoft/fluentui-apple/wiki/Size-Comparison)

Verification

Added additional test case scenarios for UIPopupMenuController, tested on both iPhone and iPad.

Visual Verification

Before	After
NA
NA
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NA

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