### 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.
}
	}
	Delimiter delimiter;
	delimiter.type = p_type;
	delimiter.start_key = p_start_key;
	delimiter.end_key = p_end_key;
	delimiter.line_only = p_line_only || p_end_key.is_empty();
	delimiters.insert(at, delimiter);
	if (!setting_delimiters) {
		delimiter_cache.clear();
		_update_delimiter_cache();
	}
}
void CodeEdit::_remove_delimiter(const String &p_start_key, DelimiterType p_type) {
	for (int i = 0; i < delimiters.size(); i++) {
		if (delimiters[i].start_key != p_start_key) {
			continue;
		}
		if (delimiters[i].type != p_type) {
			break;
		}
		delimiters.remove_at(i);
		if (!setting_delimiters) {
			delimiter_cache.clear();
			_update_delimiter_cache();
		}
		break;
	}
}
bool CodeEdit::_has_delimiter(const String &p_start_key, DelimiterType p_type) const {