Prevented Button::setToggleState sending unwanted state change messages.

modules/juce_gui_basics/buttons/juce_Button.cpp

@@ -154,7 +154,8 @@ void Button::setToggleState (const bool shouldBeOn, const NotificationType notif
                 return;
         }
 
-        sendStateMessage();
+        if (notification != dontSendNotification)
+            sendStateMessage();
     }
 }