Image viewer polish

[ZacSweers]

• [ ] If in day mode, invert status bar icon colors back to previous activity's if past 50% transparency. In both dragging and dismissing
• [x] load full res image with fade after transition. This is something Coil claims to be good at
• [x] fix bottom icon and app bar UI. App bar casts a shadow and icon is too low
• [x] ~update to new flick version and disable rotation when using shared element transitions~ Fix rotation on return transition
• [x] Fix wrong AR in return transition image
• [ ] enable bug reports on the image viewer activity
• [x] faster transition. Like Google photos speed