Support CarrierMessagingService binding for HSUM

This change supports CMS binding from telephony for HSUM by the create
new context for current user (instead of always system user).

The change doesn't change behavior for non-HSUM device but support the
case when CMS was provided by carrier app installed only on non-system
user (e.g. Main User on HSUM).

Bug: 345532465
Test: atest CarrierServicesSmsFilterTest GsmInboundSmsHandlerTest CarrierMessagingServiceWrapperTest GsmSmsDispatcherTest
Flag: com.android.internal.telephony.flags.support_carrier_services_for_hsum
Change-Id: I2a783c0a5982cfe0fe0fe1bf59ee59886a04700a
1 file changed