make sure status item rect in bar is highlighted when clicked, fixes #13630

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71193 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/cocoa/taskbar.mm

@@ -347,6 +347,7 @@ bool wxTaskBarIconCustomStatusItemImpl::SetIcon(const wxIcon& icon, const wxStri
 
         m_target = [[wxOSXStatusItemTarget alloc] init];
         [m_target setImplementation:this];
+        [m_statusItem setHighlightMode:YES];
         [m_statusItem setTarget:m_target];
         [m_statusItem setAction:@selector(clickedAction:)];
         [m_statusItem sendActionOn:NSLeftMouseDownMask];