### Godot version

4.0.beta10.mono.official

### System information

Windows 11

### Issue description

After registering a C# Script with Autoload and trying to connect to a signal using the `Signal.connect` method (`Singleton.Signal.connect(xxx)`) fails with `Invalid get index 'Signal' (on base: 'Node (Singleton.cs)'). But with `Object.connect` it works.

### Steps to reproduce

- Create a C# class script with a Signal named `Signal` (could be any other).
- Register it with Autoload with the name `Singleton` (could be any other).
- Create a GDScript script and try to connect the Singleton's signal using `Singleton.Signal.connect(xxx)`
- When running the project it fails with `Invalid get index 'Sample' (on base: 'Node (Singleton.cs)').`

### Minimal reproduction project

[example.zip](https://github.com/godotengine/godot/files/10414500/example.zip)

p_output.append("\n" OPEN_BLOCK);
		const ConstantInterface &last = ienum.constants.back()->get();
		for (const ConstantInterface &iconstant : ienum.constants) {
			if (iconstant.const_doc && iconstant.const_doc->description.size()) {
				String xml_summary = bbcode_to_xml(fix_doc_description(iconstant.const_doc->description), nullptr);
				Vector<String> summary_lines = xml_summary.length() ? xml_summary.split("\n") : Vector<String>();
				if (summary_lines.size()) {
					p_output.append(INDENT1 "/// <summary>\n");
					for (int i = 0; i < summary_lines.size(); i++) {
						p_output.append(INDENT1 "/// ");
						p_output.append(summary_lines[i]);
						p_output.append("\n");
					}
					p_output.append(INDENT1 "/// </summary>\n");
				}
			}
			p_output.append(INDENT1);
			p_output.append(iconstant.proxy_name);
			p_output.append(" = ");
			p_output.append(itos(iconstant.value));
			p_output.append(&iconstant != &last ? ",\n" : "\n");
		}
		p_output.append(CLOSE_BLOCK);
		if (enum_in_static_class) {
			p_output.append(CLOSE_BLOCK);
		}
	}
	p_output.append("\n#pragma warning restore CS1591\n");
}
Error BindingsGenerator::generate_cs_core_project(const String &p_proj_dir) {