### 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 (!is_editable()) {
		return;
	}
	if (has_selection(p_caret)) {
		delete_selection(p_caret);
		return;
	}
	begin_complex_operation();
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	for (const int &i : caret_edit_order) {
		if (p_caret != -1 && p_caret != i) {
			continue;
		}
		int cc = get_caret_column(i);
		int cl = get_caret_line(i);
		if (cc == 0 && cl == 0) {
			continue;
		}
		if (cl > 0 && _is_line_hidden(cl - 1)) {
			unfold_line(get_caret_line(i) - 1);
		}
		int prev_line = cc ? cl : cl - 1;
		int prev_column = cc ? (cc - 1) : (get_line(cl - 1).length());
		merge_gutters(prev_line, cl);
		if (auto_brace_completion_enabled && cc > 0) {