RESTRICT AUTOMERGE backport "opp: validate that content uri belongs to current user"

Bug: 296915500
Flag: EXEMPT trivial fix with complete testing coverage
Test: atest GoogleBluetoothInstrumentationTests:BluetoothOppSendFileInfoTest
Ignore-AOSP-First: fix for undisclosed vulnerability
Merged-In: I76b25fcd446d5e0530308e21deafa68d0b768edc
Change-Id: Ibff36089bfde4b5bb28d797aeae1423b668943a2