### 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.
warnings_panel->push_table(3);
	for (const ScriptLanguage::Warning &w : warnings) {
		Dictionary ignore_meta;
		ignore_meta["line"] = w.start_line;
		ignore_meta["code"] = w.string_code.to_lower();
		warnings_panel->push_cell();
		warnings_panel->push_meta(ignore_meta);
		warnings_panel->push_color(
				warnings_panel->get_theme_color(SNAME("accent_color"), SNAME("Editor")).lerp(warnings_panel->get_theme_color(SNAME("mono_color"), SNAME("Editor")), 0.5f));
		warnings_panel->add_text(TTR("[Ignore]"));
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->push_cell();
		warnings_panel->push_meta(w.start_line - 1);
		warnings_panel->push_color(warnings_panel->get_theme_color(SNAME("warning_color"), SNAME("Editor")));
		warnings_panel->add_text(TTR("Line") + " " + itos(w.start_line));
		warnings_panel->add_text(" (" + w.string_code + "):");
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->pop(); 
		warnings_panel->push_cell();
		warnings_panel->add_text(w.message);
		warnings_panel->add_newline();
		warnings_panel->pop(); 
	}
	warnings_panel->pop(); 
}
void ScriptTextEditor::_update_errors() {