Fix: Crash when exiting app while rotating the device
Description
This MR is intended to fix the crashes which occur when user tries to go to home-screen simultaneously moving to BlissLauncher.
Related issues
Type of change
- 
Bug fix (non-breaking change which fixes an issue)  - 
New feature (non-breaking change which adds functionality)  - 
Breaking change (fix or feature that would cause existing functionality to not work as expected)  - 
This change requires a documentation update  
Related MRs
How has this been tested?
- Close all open activities (swipe right to remove them from recent apps)
 - Enable screen rotation, but keep in portrait
 - Open Music app (or any other with landscape support)
 - Rotate phone to get in landscape mode
 - As soon as the android home button is placed on the right, press it.
 - BlissLauncher should not crash with this fix.
 
Checklist:
- 
My code follows the style guidelines of this project  - 
I have performed a self-review of my own code  - 
I have commented my code, particularly in hard-to-understand areas  - 
I have made corresponding changes to the documentation  - 
New and existing unit tests pass locally with my changes  - 
Any dependent changes have been merged and published in downstream modules  
Edited  by Romain Hunault