Fix masked_replace_tool to use Fortran order for column-major layout

The GridMap specification requires column-major (Fortran) order when
flattening arrays. Changed flatten() to flatten(order="F") to match
the layout dimension labels (column_index, row_index).

Author: Idate96

scripts/masked_replace_tool.py

@@ -195,7 +195,7 @@ def _numpy_to_multiarray(array: np.ndarray) -> Float32MultiArray:
         layout.dim.append(MultiArrayDimension(label="column_index", size=cols, stride=rows * cols))
         layout.dim.append(MultiArrayDimension(label="row_index", size=rows, stride=rows))
         msg.layout = layout
-        msg.data = array.flatten().tolist()
+        msg.data = array.flatten(order="F").tolist()
         return msg