Set telecomCallId in Remote ConnectionRequest

Ensure that the telecom call id generated when creating a remote
connection or conference in RemoteConnectionService is saved into the
ConnectionRequest. This was causing the call id to show up as null in
Telephony.

Bug: 323358714
Test: atest RemoteConnectionTest
Change-Id: Id8272a0fb82858e6bda7106b15d41c2b19cec3d2
diff --git a/flags/Android.bp b/flags/Android.bp
index b089796..25a7a8c 100644
--- a/flags/Android.bp
+++ b/flags/Android.bp
@@ -39,6 +39,7 @@
         "telecom_bluetoothroutemanager_flags.aconfig",
         "telecom_work_profile_flags.aconfig",
         "telecom_connection_service_wrapper_flags.aconfig",
+        "telecom_remote_connection_service.aconfig",
         "telecom_profile_user_flags.aconfig",
     ],
 }