Prevent bad apps from getting Setting Slices

SettingsSliceProvider no longer allows apps to request permission
from the user for Settings Slices. Instead, the PrimaryAction on the
permission slice will be an intent into Settings.

This is because the dialog for granting apps Settings Slices would act
as a replacement for regular permission dialogs, which we want to avoid.

Fixes: 130795282
Test: robolectrico
Change-Id: I6848215bab2bf10ee5e53814b765d04f04f53f4e