Adapt HistoryTextWrapper#notifyListeners to call super

This commit adapts the notifyListeners method in HistoryTextWrapper to
call super#notifyListeners since not calling it changes the underlying
default behaviour of its superclasses leading to faulty behavior, e.g.
it breaks the chain of DPIChange processing leading to a broken drop down
button in the HistoryTextWraper on DPIChange Event.

Author: amartya4256

bundles/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/internal/findandreplace/overlay/HistoryTextWrapper.java

@@ -200,6 +200,7 @@ public boolean forceFocus() {
 
 	@Override
 	public void notifyListeners(int eventType, Event event) {
+		super.notifyListeners(eventType, event);
 		textBar.notifyListeners(eventType, event);
 	}