Location update snackbar flickers when returning to settings screen

[smichel17]

Steps To Reproduce

1. Enable "Sunset to sunrise"
2. Click on "Pause in excluded apps" to go to that subscreen
3. Return to settings screen, watching the bottom of the screen closely

Actual behavior: "Searching for location" snackbar appears very briefly at the bottom.

Expected behavior: Snackbar should not flicker. Either it should appear for a few seconds to show a message (one of: a prompt to enable location services, "searching for location", or "location found") or not at all.

Additional description/details (optional) This also happens sometimes when enabling "Sunset to sunrise" setting.

Device info:

• Red Moon version (under Red Moon settings): v3.5.0
• Android version (under Settings > About device): 7.0
• Device: Emulator (api24, x86_64, no google apis)