[DO NOT MERGE] Verify ringtone from ringtone picker is audio
To improve privacy. Bug: 221041256 Test: atest com.android.settings.DefaultRingtonePreferenceTest Change-Id: I0a9ca163f5ae91b67c9f957fde4c6db326b8718d Merged-In: I0a9ca163f5ae91b67c9f957fde4c6db326b8718d (cherry picked from commit e4c22580)
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