[ Merge of http://go/wvgerrit/141949 ]
[ Cherry-pick of http://ag/16496424 ]
If the debug count for ignoring an L1 keybox is still non-zero after
successfully processing an OTA keybox request, the dynamic layer MUST
return a failure to the CDM to keep the CDM and dynamic layer in
agreement that the L1 keybox should continue be treated as invalid.
This will trigger a fallback; but the fallback can be canceled via
the debugging app.
Bug: 210823889
Test: Android manual testing
Change-Id: I75f50ba605d17872c0e8abffc1eee13ff539f01c
1b35b915b5