[notifications] Resolve issues with reversed actions
Summary
Resolves the issue with notification actions being rendered in reverse and therefore being acted on in reverse
Test Plan
Before:
Cosmetically, Notification actions would often appear in the opposite order from how they were set on Android, and functionally they would behave strangely, often not as the label indicated they ought to.
After:
Notifications render in the same order as on Android and do what they say they should do.