Catch exception during query

ContentResolve#query sometimes throws
exceptions that can't be handled by clients.
(BluetoothPbapService or BluetoothMapService)

Instead of throwing an exception, return null.
All the callers already handle null returns.

Flag: EXEMPT, exception handling
Bug: 383227945
Test: atest BluetoothInstrumentationTests
Change-Id: I641a14fbe44e416a3e7fa2cad11e19cf8e29395a