Ensure RecentsOrientedState.mRecentsRotation is up to date on swipe up

- Updates RecentsOrientedState.mRecentsRotation after launcher is started, as it's not updated when RecentsView is in foreground when device rotates e.g. inside another app
- No longer calls updateOrientationHandler in onConfigurationChanged, as updateOrientationHandler is already called in setInsets, which get called on rotation

Bug: 181550945
Test: Swipe up to enter overview, launch app, rotate, then swipe up again
Test: Swipe up to enter overview from landscape only app, while holding device in portrait
Change-Id: I268093617d51333678e510c910ed15275706f984