Fix the problem that the ToggleSubscriptionDialogActivity

appears twice when switch changed.

- Don't trigger the switch change event if the state of Switch and
  SwitchSettingsMainSwitchPreference are the same.

Fix: 190767461
Test: robotest and operate the switch preference manually

Change-Id: I6ab4b7e5ca1455948ca9118bb4a674fdc4fdbd50

tests/robotests/src/com/android/settings/widget/SettingsMainSwitchPreferenceTest.java

@@ -59,8 +59,8 @@ public class SettingsMainSwitchPreferenceTest {
     }
 
     @Test
-    public void updateStatus_isRestricted_restrictIconShouldDisplay() {
-        mPreference.updateStatus(true);
+    public void onBindViewHolder_isRestricted_restrictIconShouldDisplay() {
+        mPreference.onBindViewHolder(mHolder);
 
         final SettingsMainSwitchBar switchBar = mPreference.getSwitchBar();
         final ImageView restrictedIcon = switchBar.findViewById(