### 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.
} else {
			update_code_completion = (allow_unicode_handling && k->get_unicode() >= 32);
		}
		if (!update_code_completion) {
			cancel_code_completion();
		}
	}
	
	if (!code_hint.is_empty() && k->is_action("ui_cancel", true)) {
		set_code_hint("");
		accept_event();
		return;
	}
	if (allow_unicode_handling && k->get_unicode() == ')') {
		set_code_hint("");
	}
	
	if (k->is_action("ui_text_indent", true)) {
		do_indent();
		accept_event();
		return;
	}
	if (k->is_action("ui_text_dedent", true)) {
		unindent_lines();
		accept_event();
		return;
	}
	
	if (k->is_action("ui_text_newline_above", true)) {
		_new_line(false, true);