### 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.
if (!ClassDB::get_integer_constant_enum(p_class, p_enum_constant)) {
		return ScriptLanguage::LOCATION_OTHER;
	}
	int depth = 0;
	StringName class_test = p_class;
	while (class_test && !ClassDB::get_integer_constant_enum(class_test, p_enum_constant, true)) {
		class_test = ClassDB::get_parent_class(class_test);
		depth++;
	}
	return depth | ScriptLanguage::LOCATION_PARENT_MASK;
}
static String _trim_parent_class(const String &p_class, const String &p_base_class) {
	if (p_base_class.is_empty()) {
		return p_class;
	}
	Vector<String> names = p_class.split(".", false, 1);
	if (names.size() == 2) {
		String first = names[0];
		String rest = names[1];
		if (ClassDB::class_exists(p_base_class) && ClassDB::class_exists(first) && ClassDB::is_parent_class(p_base_class, first)) {
			return rest;
		}
	}
	return p_class;
}
static String _get_visual_datatype(const PropertyInfo &p_info, bool p_is_arg, const String &p_base_class = "") {