Only rescan ringtones and such, not everything

We really only localize ringtones, alarms and notifications, so there
is no need to rescan everything, potentially losing manual edits the
user did.

Bug: 74821529
Bug: 74506985
Test: manual
Change-Id: Ic3cb31b96d91319a77889755476e9b6fd21c2141
1 file changed