### Godot version

v4.2.dev3.mono.official [013e8e3af]

### System information

Godot v4.2.dev3.mono - Windows 10.0.22621 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3050 Ti Laptop GPU (NVIDIA; 31.0.15.3598) - AMD Ryzen 7 5800H with Radeon Graphics (16 Threads)

### Issue description

When creating and attaching a built-in script to any type of node, trying to drag nodes from the scene-tree results in an error that appears at the bottom-right of the editor, but not in the console window. The error states:

`Can't drop nodes because script 'xxxxxxxx::xxxxxxx' does not inherit Node.`
 Even though the script clearly extends Node or any other type.

### Steps to reproduce

1. Create and add any node type to the scene tree.
2. Attach a new script, choose Built-in from the dialog.
3. Save the scene first, as at the time of writing, Godot suffers from a bug that causes it to crash if the scene was not saved first.
4. Try dragging or even ctrl-dragging a node to the script.
5. Observe the error appear at the bottom-right in a yellow-accent pop-up.
6. Nod and confirm that the bug exists.


### Minimal reproduction project

[can't drag nodes into built-in scripts.zip](https://github.com/godotengine/godot/files/12511196/can.t.drag.nodes.into.built-in.scripts.zip)

Loose files in the archive. Extract into their own folder.
if (has_named_classes) {
		return class_name->get_text();
	} else {
		return ProjectSettings::get_singleton()->localize_path(file_path->get_text()).get_file().get_basename();
	}
}
void ScriptCreateDialog::_class_name_changed(const String &p_name) {
	is_class_name_valid = _validate_class(class_name->get_text());
	validation_panel->update();
}
void ScriptCreateDialog::_parent_name_changed(const String &p_parent) {
	is_parent_name_valid = _validate_parent(parent_name->get_text());
	validation_panel->update();
}
void ScriptCreateDialog::_template_changed(int p_template) {