Fix #1999 - checkasync should return restricted for locationinuse whe…

[aritchie]

Description of Change

Ensuring Permissions.LocationWhenInUse.CheckAsync on Android returns Restricted if only coarse permission is granted

Bugs Fixed

• Fixes #1999

API Changes

LocationWhenInUse & pulled out CheckSelfPermission out of the loop so it can be used for individual checks

Changed:

Since CheckSelfPermission was moved to DoCheck, BasePlatformPermission.CheckStatusAsync had it's loop code pointed at new method.

LocationWhenInUse overrides CheckAsync now

Behavioral Changes

If AccessFineLocation is denied, but AccessCoarseLocation is granted - PermissionStatus.Restricted is now returned

PR Checklist

• [ ] Has tests (if omitted, state reason in description)
• [X] Has samples (if omitted, state reason in description)
• [X] Rebased on top of main at time of PR
• [X] Changes adhere to coding standard
• [ ] Updated documentation (see walkthrough)

[Cheesebaron]

Seems to work!

I made a small test project for this here: https://github.com/Cheesebaron/EssentialsLocationPermissionTest

[jfversluis]

Thanks so much @Cheesebaron @aritchie <3