### 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.
emit_signal(SNAME("symbol_validate"), symbol_lookup_new_word);
				}
			} else {
				set_symbol_lookup_word_as_valid(false);
			}
		}
		return;
	}
	
	if (!k->is_pressed() || k->get_keycode() == Key::CTRL || k->get_keycode() == Key::ALT || k->get_keycode() == Key::SHIFT || k->get_keycode() == Key::META || k->get_keycode() == Key::CAPSLOCK) {
		return;
	}
	
	
	bool allow_unicode_handling = !(k->is_command_or_control_pressed() || k->is_ctrl_pressed() || k->is_alt_pressed() || k->is_meta_pressed());
	
	if (code_completion_enabled && k->is_action("ui_text_completion_query", true)) {
		request_code_completion(true);
		accept_event();
		return;
	}
	if (code_completion_active) {
		if (k->is_action("ui_up", true)) {
			if (code_completion_current_selected > 0) {
				code_completion_current_selected--;
			} else {
				code_completion_current_selected = code_completion_options.size() - 1;
			}
			code_completion_force_item_center = -1;
			queue_redraw();