Add FakeContext.getContentResolver()

This avoids the following error on some devices:

    Given calling package android does not match caller's uid 2000

Refs #4639 comment <https://github.com/Genymobile/scrcpy/issues/4639#issuecomment-2466081589>
Fixes #4639 <https://github.com/Genymobile/scrcpy/issues/4639>
PR #5476 <https://github.com/Genymobile/scrcpy/pull/5476>

Signed-off-by: Romain Vimont <rom@rom1v.com>