Delete locally transcribed transcripts when transcription is turned off.

When a user turns off transcription setting we should delete all the voicemails locally transcribed by google. We do this by deleting all the transcripts associated with the source package of the app.

Bug: 74033229,76167428
Test: Unit Test
PiperOrigin-RevId: 190159353
Change-Id: I328aece594aa0e66de59e43fa3619b5e9ae15f78
2 files changed