Fix(Whiteboard): Side System Gesture Exclusion

[LUwUcifer]

Purpose / Description

When whiteboard toolbar is docked to the sides and collapsed, swiping right will not cause the app to exit

Fixes

• Fixes [New study screen] Make whiteboard Hide toolbar feature compatible with system navigation gestures #20346

Approach

Calls systemGestureExclusionRects function within an overriden onLayout function within the whiteboardToolbar to include the whiteboard as an excluded Rect, it should be noted that since the toolbar has a starting margin of 8dp, swiping in that area would still cause the screen to exit

How Has This Been Tested?

Tested on a local device as well as an Emulated Medium Phone API 36.1

Learning (optional, can help others)

Previous usages of the function setSystemGestureExclusionRects in other repositories on github heavily influenced the written code

Links to blog posts, patterns, libraries or addons used to solve this problem

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[david-allison]

Cheers!