Settings: Fix force close for telephony callback exceeding limitation

When sub info changed, new telephony callback will be registered but old telephony callback not un-registered. Finally result in force close for registered telephony callback count exceeding its allowed.

No need to re-registered the telephony callback for one sub if registered.

Bug: 328716180

Change-Id: Ia0c3b311b5b5cc77f061d81ec21250abde2fa9f4
diff --git a/src/com/android/settings/network/MobileNetworkRepository.java b/src/com/android/settings/network/MobileNetworkRepository.java
index af37d24..7bc61a4 100644
--- a/src/com/android/settings/network/MobileNetworkRepository.java
+++ b/src/com/android/settings/network/MobileNetworkRepository.java
@@ -245,7 +245,11 @@
     }
 
     private void createTelephonyManagerBySubId(int subId) {
-        if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+        if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID
+                || mTelephonyCallbackMap.containsKey(subId)) {
+            if (DEBUG) {
+                Log.d(TAG, "createTelephonyManagerBySubId: directly return for subId = " + subId);
+            }
             return;
         }
         PhoneCallStateTelephonyCallback