use sub_shape_1d property of grids / strucutres for array allocation.

Author: Jammy2211

autoarray/structures/grids.py

@@ -599,6 +599,10 @@ def __array_finalize__(self, obj):
         if hasattr(obj, "interpolator"):
             self.interpolator = obj.interpolator
 
+    @property
+    def sub_shape_1d(self):
+        return self.mask.sub_shape_1d
+
     @property
     def mask(self):