If the caller wanted to use that intent object after passing it to this
method, it would be mutated in an unexpected way. Instead we create a
copy of the intent and broadcast that.
Bug: 144108192
Test: atest com.android.internal.telephony.CellBroadcastIntentsTest
Change-Id: I89e08b4a50beeb49410521baa9d449b2dc28ecd3
Merged-In: I89e08b4a50beeb49410521baa9d449b2dc28ecd3