Make sendOrderedBroadcastAsUserMultiplePermissions non-abstract

As per linter warning and code reviews comment. It makes it easier on
inheritting classes.

Flag: com.android.bluetooth.ordered_broadcast_multiple_permissions
Test: mma -j68
Bug: 344915071
Merged-In: I308f965802aff385914d514e0bc50a1e716e096e
Change-Id: I308f965802aff385914d514e0bc50a1e716e096e