Account for RTL languages for maximize menu

Makes the following changes:
1. Shifts the menu if it goes off the left side of the screen
   (previously only accounted for right side)
2. Switches buttons when screen is laid out RTL since menu will be
   mirrored in this case

Bug: 390183820
Test: Open maximize menu near left edge, hover over snap options
Flag: com.android.window.flags.enable_desktop_windowing_mode
Change-Id: Ia6aefa222aaf36eab4024fcb75eb54fef6df9aa7