fdo#72774: Ensure that all the group fields are in cache upon file load.

This resolves the originally reported issue in that bug (in Comment 1).

Change-Id: I6fb85cff1eafb78d784605aa08e7d992a1ac36e0

sc/source/core/data/dpobject.cxx

@@ -2858,6 +2858,9 @@ const ScDPCache* ScDPCollection::SheetCaches::getCache(const ScRange& rRange, co
             return NULL;
         }
 
+        if (pDimData)
+            pDimData->WriteToCache(*itCache->second);
+
         return itCache->second;
     }