### 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.
language = ScriptServer::get_language(l);
	has_named_classes = language->has_named_classes();
	can_inherit_from_file = language->can_inherit_from_file();
	supports_built_in = language->supports_builtin_mode();
	if (!supports_built_in) {
		is_built_in = false;
	}
	String selected_ext = "." + language->get_extension();
	String path = file_path->get_text();
	String extension = "";
	if (!path.is_empty()) {
		if (path.contains(".")) {
			extension = path.get_extension();
		}
		if (extension.length() == 0) {
			// 
			path += selected_ext;
			_path_changed(path);
		} else {
			// 
			List<String> extensions;
			
			for (int m = 0; m < language_menu->get_item_count(); m++) {