### Godot version

4.0 dev_build

### System information

Ubuntu 22.04.1

### Issue description

The "Lookup Symbol" button don't appears for custorm class names.
Related issues: #68475,  #73167.
I tried apply #68311, #69473 and #73196. It don't helps.
The `Ctrl+LMB` works right for all cases.

### Steps to reproduce

Right click to the `CustomClassA` symbol in the `custom_class_b.gd` anywhere. The `Lookup Symbol` button don't appears in the context menu.

### Minimal reproduction project

Example from  #68475.
return "";
}
void GDScriptLanguage::get_recognized_extensions(List<String> *p_extensions) const {
	p_extensions->push_back("gd");
}
void GDScriptLanguage::get_public_functions(List<MethodInfo> *p_functions) const {
	List<StringName> functions;
	GDScriptUtilityFunctions::get_function_list(&functions);
	for (const StringName &E : functions) {
		p_functions->push_back(GDScriptUtilityFunctions::get_function_info(E));
	}
	
	{
		MethodInfo mi;
		mi.name = "preload";
		mi.arguments.push_back(PropertyInfo(Variant::STRING, "path"));
		mi.return_val = PropertyInfo(Variant::OBJECT, "", PROPERTY_HINT_RESOURCE_TYPE, "Resource");
		p_functions->push_back(mi);
	}
	{
		MethodInfo mi;
		mi.name = "assert";
		mi.return_val.type = Variant::NIL;
		mi.arguments.push_back(PropertyInfo(Variant::BOOL, "condition"));
		mi.arguments.push_back(PropertyInfo(Variant::STRING, "message"));
		mi.default_arguments.push_back(String());
		p_functions->push_back(mi);
	}
}
void GDScriptLanguage::get_public_constants(List<Pair<String, Variant>> *p_constants) const {