Apply suggestion from @Thijss

Signed-off-by: Thijs Baaijen <[email protected]>

Author: Thijss

src/power_grid_model_ds/_core/model/arrays/base/array.py

@@ -332,4 +332,4 @@ def from_extended(cls: Type[Self], extended: Self) -> Self:
         if not isinstance(extended, cls):
             raise TypeError(f"Extended array must be of type {cls.__name__}, got {type(extended).__name__}")
         dtype = cls.get_dtype()
-        return cls(data=np.array(extended.data[list(dtype.names)], dtype=dtype))
+        return cls(data=np.array(extended[list(dtype.names)], dtype=dtype))