fix secondary order of dashboard listings (#10982)

Author: iszmais

components/ILIAS/Dashboard/Block/classes/class.ilDashboardBlockGUI.php

@@ -515,10 +515,14 @@ public function getItemGroups(): array
             case ilPDSelectedItemsBlockConstants::SORT_BY_START_DATE:
                 return $this->groupItemsByStartDate();
             case ilPDSelectedItemsBlockConstants::SORT_BY_TYPE:
-                return $this->groupItemsByType();
+                $groups = $this->groupItemsByType();
+                ksort($groups, SORT_NATURAL);
+                return $groups;
             case ilPDSelectedItemsBlockConstants::SORT_BY_LOCATION:
             default:
-                return $this->groupItemsByLocation();
+                $groups = $this->groupItemsByLocation();
+                ksort($groups, SORT_NATURAL);
+                return $groups;
         }
     }