Camera: Fix VTS failure for depth only camera

If the device is depth-only, use threshold with Y16 format rather than
IMPLEMENTATION_DEFINED.

This fixes the regression introduced by the fix for b/265984260.

Bug: 276957901
Test: atest VtsAidlHalCameraProvider_TargetTest
Change-Id: If9023f1ed17bb761abbb9be36e567264f8bf0689
2 files changed