fdo#64337 Do not show empty findbar in startcenter.

Using the shortcut for search on the start center displayed an empty
toolbar on the start center. This commit adds a check to see whether
the command to execute in the startcenter is FocusToFindbar, and if
it is, it skips executing it.

Change-Id: I0835e87d4a1eef0fc9ff17c184b531592b3e2d5a

sfx2/source/dialog/backingwindow.cxx

@@ -355,7 +355,8 @@ bool BackingWindow::Notify( NotifyEvent& rNEvt )
         }
         const KeyEvent* pEvt = rNEvt.GetKeyEvent();
         const KeyCode& rKeyCode(pEvt->GetKeyCode());
-        if( pEvt && mpAccExec->execute(rKeyCode) )
+        const OUString aCommand = mpAccExec->findCommand(svt::AcceleratorExecute::st_VCLKey2AWTKey(rKeyCode));
+        if((aCommand != "vnd.sun.star.findbar:FocusToFindbar") && pEvt && mpAccExec->execute(rKeyCode))
             return true;
     }