Handle the cases when RCS config is null

1. The RCS config should be reset when notifyRcsAutoConfigurationRemoved
is called.
2. When RCS config is null, notifyRcsAutoConfigurationReceived should
not been called.

Bug: 176443559
Test: atest TeleServiceTests:com.android.phone.RcsProvisioningMonitorTest
Change-Id: Iefda454f5a87338b66cd3acef6b8b6184c4001df
2 files changed