### Godot version

4.1.dev (1becfea37c)

### System information

MacOS 13.3 M1 Pro

### Issue description

When renaming with Batch Rename using invalid character `NodePath` will be updated with the invalid new name.

### Steps to reproduce

1.  open MRP
2. batch rename all nodes except the root from `e` to `%`
3. look at the `NodePath` on the root

### Minimal reproduction project

[test1.zip](https://github.com/godotengine/godot/files/11377324/test1.zip)

if (!can_drop_data_fw(p_point, p_data, p_from)) {
		return;
	}
	TreeItem *item = tree->get_item_at_position(p_point);
	if (!item) {
		return;
	}
	int section = tree->get_drop_section_at_position(p_point);
	if (section < -1) {
		return;
	}