fix: Navigate Up versus Close

[Prince-kushwaha]

Fixes

• Fixes [BUG]: Navigate Up versus Close #17609

How Has This Been Tested?

Physical Device

Checklist

• 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

[lukstbit]

This breaks the home icon in the toolbar.
The changes required for fixing the issue:

• replace the current (x) icon with the platform UP arrow icon (<-) so we match the platform UI
• on clicking that icon we should leave the screen completely
• don't break the home toolbar icon

[lukstbit]

Thanks!

[mikehardy]

request for comments explaining

[mikehardy]

Thanks for adding the comment - didn't mean to be picky it was just subtle and I thought a comment addition would be really easy + help in the future. I appreciate it anyway

Cheers

[mikehardy]

Thought this was pickable for a 2.20.1 release and gave it a shot but it relies on other changes already being in place from #17579 and those don't pick cleanly at all, so no cherry-pick for this one