wxGUI: fix dialog styles on Windows

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@57207 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_core/widgets.py

@@ -143,6 +143,7 @@ class NotebookController:
         """!Highlighted tab name should be removed."""
         page = event.GetSelection()
         self.RemoveHighlight(page)
+        event.Skip()
 
     def RemoveHighlight(self, page):
         """!Removes highlight string from notebook tab name if necessary.