SimIconView: Don't intercept touch events when there's nothing to do

Fix unable to switch conversation sim card by clicking on the sim icon.

Change-Id: I9359cfc4f730186d8709251856899efa8484f6d9

src/com/android/messaging/ui/conversation/SimIconView.java

@@ -49,7 +49,7 @@ public class SimIconView extends ContactIconView {
         if (isClickable()) {
             return super.onTouchEvent(event);
         }
-        return true;
+        return false;
     }
 
     @Override