Self managed CS implementation.

Add required AIDL changes to pass along connection fails.

Test: Manual
Bug: 34159263
Merged-In: I0a24ff786b2867aa4e19ac79959df54a04983251
Change-Id: I0a24ff786b2867aa4e19ac79959df54a04983251

telecomm/java/android/telecom/TelecomManager.java

@@ -1517,6 +1517,10 @@ public class TelecomManager {
      *      otherwise.
      */
     public boolean isIncomingCallPermitted(PhoneAccountHandle phoneAccountHandle) {
+        if (phoneAccountHandle == null) {
+            return false;
+        }
+
         ITelecomService service = getTelecomService();
         if (service != null) {
             try {