### 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.
bool shift_pressed = Input::get_singleton()->is_key_pressed(Key::SHIFT);
	if (p_gutter == main_gutter) {
		if (draw_breakpoints && !shift_pressed) {
			set_line_as_breakpoint(p_line, !is_line_breakpointed(p_line));
		} else if (draw_bookmarks && shift_pressed) {
			set_line_as_bookmarked(p_line, !is_line_bookmarked(p_line));
		}
		return;
	}
	if (p_gutter == line_number_gutter) {
		remove_secondary_carets();
		set_selection_mode(TextEdit::SelectionMode::SELECTION_MODE_LINE, p_line, 0);
		select(p_line, 0, p_line + 1, 0);
		set_caret_line(p_line + 1);
		set_caret_column(0);
		return;
	}
	if (p_gutter == fold_gutter) {
		if (is_line_folded(p_line)) {
			unfold_line(p_line);
		} else if (can_fold_line(p_line)) {
			fold_line(p_line);
		}
		return;
	}
}
void CodeEdit::_update_gutter_indexes() {