### Godot version

4.1.dev (a7276f1ce0)

### System information

MacOS 13.3 M1 Pro

### Issue description

when doing a Batch rename with two nodes being present in a `NodePath`. Batch Rename will try to update the `NodePath` but will fail which will results in this error
<img width="515" alt="Capture d’écran 2023-04-14 à 23 59 02" src="https://user-images.githubusercontent.com/66184050/232161972-57b49435-7707-4e41-bfed-613b073477b7.png">


### Steps to reproduce

1. Open the minimal reproduction project or follow the instruction below:
    1. first reproduce the following tree (this is because of #76069) <img width="235" alt="Capture d’écran 2023-04-14 à 23 09 47" src="https://user-images.githubusercontent.com/66184050/232155382-da3f9e22-26fb-4e10-bdcb-07cb60c25ea1.png">
    2. add a script to the root and export a `NodePath` variable
    3. Set the exported variable to the `GrandChild` node
4. select all node except the root.
5. Batch rename `C` to `T` for example
6. Inspect the root node. You should have a broken `NodePath` and an error.

### Minimal reproduction project

[test1.zip](https://github.com/godotengine/godot/files/11237175/test1.zip)
RenameDialog *self = (RenameDialog *)p_self;
	String source_file = String::utf8(p_file);
	
	if (self->has_errors || source_file.find("regex") < 0) {
		return;
	}
	String err_str;
	if (p_errorexp && p_errorexp[0]) {
		err_str = String::utf8(p_errorexp);
	} else {
		err_str = String::utf8(p_error);
	}
	self->has_errors = true;
	self->lbl_preview_title->set_text(TTR("Regular Expression Error:"));
	self->lbl_preview->add_theme_color_override("font_color", EditorNode::get_singleton()->get_gui_base()->get_theme_color(SNAME("error_color"), SNAME("Editor")));
	self->lbl_preview->set_text(vformat(TTR("At character %s"), err_str));
}
String RenameDialog::_regex(const String &pattern, const String &subject, const String &replacement) {
	RegEx regex(pattern);
	return regex.sub(subject, replacement, true);
}
String RenameDialog::_postprocess(const String &subject) {