Ensure ICS receives call endpoint change when connected.

When setting up a call, sometimes InCallController#onCallEndpointChanged
is invoked before InCallService connected, and result that
InCallService#onCallEndpointChanged can not be notified to update
CallEndpoint info.

It is timing issue, the sequence can not be fixed. So when InCallService
is connected, invoke InCallService#onCallEndpointChanged again.

Bug: 348297436
Test: Manual call, atest InCallControllerTests
Flag: com.android.server.telecom.flags.on_call_endpoint_changed_ics_on_connected

Change-Id: I015715e8485713a9ab520be0a0be6611a1d9a933