fixes resource.load_tiles method to only filter if given perm #10274 (#…

…10275)

* fixes resource.load_tiles method to only filter if given perm #10274

* nit #10274

arches/app/models/resource.py

@@ -243,7 +243,7 @@ def save(self, *args, **kwargs):
         if index is True:
             self.index(context)
 
-    def load_tiles(self, user=None, perm=None):
+    def load_tiles(self, user=None, perm='read_nodegroup'):
         """
         Loads the resource's tiles array with all the tiles from the database as a flat list