Send request immediately to handler

The following methods are updated in this cl:
- provisionSatellite
- deprovisionSatellite

Bug: 409584433
Test: atest
Flag: com.android.internal.telephony.flags.satellite_improve_multi_thread_design
Change-Id: I9eeaacd8387cd1d660f0c1e3470a9999aa4e7a3d