Resolves: tdf#119623 record group positions also for top cells

So listeners can be re-established for remaining grouped cells if
top cell is deleted (which ends listening and probably was the
cause to exclude them here).

Change-Id: Ic91b74c65013452d56b5cfbc132722c4314743c8
Reviewed-on: https://gerrit.libreoffice.org/61808Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins

sc/source/core/data/column4.cxx

@@ -1522,10 +1522,12 @@ void ScColumn::EndListeningIntersectedGroups(
     {
         ScFormulaCell* pFC = sc::formula_block::at(*it->data, aPos.second);
         ScFormulaCellGroupRef xGroup = pFC->GetCellGroup();
-        if (xGroup && !pFC->IsSharedTop())
+        if (xGroup)
         {
-            // End listening.
-            pFC->EndListeningTo(rCxt);
+            if (!pFC->IsSharedTop())
+                // End listening.
+                pFC->EndListeningTo(rCxt);
+
             if (pGroupPos)
                 // Record the position of the top cell of the group.
                 pGroupPos->push_back(xGroup->mpTopCell->aPos);
@@ -1538,10 +1540,12 @@ void ScColumn::EndListeningIntersectedGroups(
     {
         ScFormulaCell* pFC = sc::formula_block::at(*it->data, aPos.second);
         ScFormulaCellGroupRef xGroup = pFC->GetCellGroup();
-        if (xGroup && !pFC->IsSharedTop())
+        if (xGroup)
         {
-            // End listening.
-            pFC->EndListeningTo(rCxt);
+            if (!pFC->IsSharedTop())
+                // End listening.
+                pFC->EndListeningTo(rCxt);
+
             if (pGroupPos)
             {
                 // Record the position of the bottom cell of the group.