Handle Telecom presentation and pending caller choice notifications

tools/chatgui-android/app/src/main/java/com/utun/chat/data/CallService.kt

@@ -185,6 +185,7 @@ class CallService : Service() {
             .setContentText(when (st?.phase) {
                 CallPhase.ACTIVE -> AppLanguage.text(R.string.call_talking)
                 CallPhase.RINGING -> AppLanguage.text(R.string.call_ringing)
+                CallPhase.WAIT_DECISION -> AppLanguage.text(R.string.phone_busy_warning)
                 else -> AppLanguage.text(R.string.call_setup)
             })
             .setCategory(NotificationCompat.CATEGORY_CALL)

tools/chatgui-android/app/src/main/java/com/utun/chat/data/UtunConnection.kt

@@ -65,6 +65,7 @@ class UtunConnection(
     override fun onDisconnect() = TelecomCallManager.notifyDisconnect(callId)
 
     override fun onAbort() = TelecomCallManager.notifyAbort(callId)
+    override fun onShowIncomingCallUi() = TelecomCallManager.notifyIncomingUiAllowed(callId)
 
     override fun onStateChanged(state: Int) {
         LogManager.addLog("DEBUG", "UtunConn", "state -> %s".format(Connection.stateToString(state)))

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/components/ActiveCallBanner.kt

@@ -41,12 +41,13 @@ fun ActiveCallBanner(
 ) {
     val st = viewModel.callState.collectAsState().value ?: return
     val phase = st.phase
-    if (phase != CallPhase.OUTGOING && phase != CallPhase.RINGING && phase != CallPhase.ACTIVE) return
+    if (phase != CallPhase.OUTGOING && phase != CallPhase.RINGING && phase != CallPhase.ACTIVE && phase != CallPhase.WAIT_DECISION) return
 
     val name = st.peerName.ifEmpty { "0x%016x".format(st.peerNodeId) }
     val status = when (phase) {
         CallPhase.ACTIVE -> stringResource(R.string.call_talking_prefix) + fmtDuration(st.durationSeconds)
         CallPhase.RINGING -> stringResource(R.string.call_ringing)
+        CallPhase.WAIT_DECISION -> stringResource(R.string.phone_busy_warning)
         else -> stringResource(R.string.call_connecting)
     }