locationAlways does not work on Android 10

[hirameee55]

🔙 Regression

When requesting locationAlways on Android 10, the Runtime Permission dialog does not appear and the API is returned immediately.

According to the Android specification, the "Allow all the time" option is included even when requesting background location on Android 10.
https://developer.android.com/training/location/permissions#request-background-location

Old (and correct) behavior

Version:8.3.0
When I request locationAlways on Android 10, the Runtime Permission dialog appears and I can select "Allow all the time".

Current behavior

Version: 10.0.0
Runtime Permission does not appear on Android 10.

Reproduction steps

Do the following on Android 10 device.

await Permission.locationAlways.request();

Configuration

Version: 10.0.0

Platform:

• 📱 iOS
• 🤖 Android

flutter doctor:
[✓] Flutter (Channel stable, 3.0.5, on macOS 12.5.1 21G83 darwin-x64, locale en-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 14.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] VS Code (version 1.71.2)
[✓] Connected device (3 available)
[✓] HTTP Host Availability

[Erhannis]

MIGHT be relevant: on Android 12, at least, I was asking for multiple permissions and it was failing without explanation, but after half an hour of poking around, I looked at logcat and it said "GrantPermissionsViewModel: For R+ apps, background permissions must be requested after foreground permissions are already granted". Separating out the "locationAlways" into its own subsequent request fixed it. (IMO, the library should do that automatically, please.)

[hirameee55]

This is true for Android R (11) and above, but Android Q (10) can request background and foreground permissions at the same time. The following modification makes this impossible and requires the addition of "Android R or higher" to the break requirement.

#792
#794

[myselfuser1]

This might help https://www.youtube.com/watch?v=uMvGpBOT0ZY

[JeroenWeener]

Related to #781. This issue requires logic specific for Android 10.