lok: avoid locking table when ScSpecialFilterDlg is destroyed

ScSpecialFilterDlg by default does not lock the table, but in tiled
rendering case, switching sheets are locked when the dialog is closed

Thanks Michael Meeks for debugging

Change-Id: Ifa32fd63085f3e082b97ad0313dff7b826b95d2e
Reviewed-on: https://gerrit.libreoffice.org/72074Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>

sc/source/ui/app/scmod.cxx

@@ -1615,7 +1615,7 @@ bool ScModule::IsTableLocked()
                 bLocked = pRefDlg->IsTableLocked();
             }
         }
-        else
+        else if (!comphelper::LibreOfficeKit::isActive())
             bLocked = true;     // for other views, see IsModalMode
     }