fdo#72727: Revert "fdo#68663 don't blindly force categories when there are none"

This reverts commit b090cbdf.

xmloff/source/chart/SchXMLTableContext.cxx

@@ -942,6 +942,16 @@ void SchXMLTableHelper::switchRangesFromOuterToInternalIfNecessary(
         }
     }
 
+    // there exist files with own data without a categories element but with row
+    // descriptions.  The row descriptions were used as categories even without
+    // the categories element
+    if( ! bCategoriesApplied )
+    {
+        SchXMLTools::CreateCategories(
+            xDataProv, xChartDoc, OUString("categories"),
+            0 /* nCooSysIndex */, 0 /* nDimension */ );
+    }
+
     //i91578 display of hidden values (copy paste scenario; use hidden flag during migration to locale table upon paste )
     //remove series that consist only of hidden columns
     Reference< chart2::XInternalDataProvider > xInternalDataProvider( xDataProv, uno::UNO_QUERY );