Fix (unreported) broken code in BKE_collection_object_cache_free.

This call should be recursive, only freeing cache of immediate parents
of the collection is not enough, the whole parenting chain needs to be
processed.

source/blender/blenkernel/intern/collection.c

@@ -898,7 +898,7 @@ void BKE_collection_object_cache_free(Collection *collection)
   collection_object_cache_free(collection);
 
   LISTBASE_FOREACH (CollectionParent *, parent, &collection->runtime.parents) {
-    collection_object_cache_free(parent->collection);
+    BKE_collection_object_cache_free(parent->collection);
   }
 }