use tab page name instead of id

Change-Id: I771150d447f0e7799f511cf28c71f6adcde64f5d
Reviewed-on: https://gerrit.libreoffice.org/53420Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sc/source/ui/view/cellsh1.cxx

@@ -3023,7 +3023,7 @@ void ScCellShell::ExecuteSubtotals(SfxRequest& rReq)
 
     pDlg.disposeAndReset(pFact->CreateScSubTotalDlg(pTabViewShell->GetDialogParent(), &aArgSet));
     assert(pDlg); // "Dialog create fail
-    pDlg->SetCurPageId(1);
+    pDlg->SetCurPageId("1stgroup");
 
     short bResult = pDlg->Execute();