### 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.
highlight_matching_braces_enabled = p_enabled;
	queue_redraw();
}
bool CodeEdit::is_highlight_matching_braces_enabled() const {
	return highlight_matching_braces_enabled;
}
void CodeEdit::add_auto_brace_completion_pair(const String &p_open_key, const String &p_close_key) {
	ERR_FAIL_COND_MSG(p_open_key.is_empty(), "auto brace completion open key cannot be empty");
	ERR_FAIL_COND_MSG(p_close_key.is_empty(), "auto brace completion close key cannot be empty");
	for (int i = 0; i < p_open_key.length(); i++) {
		ERR_FAIL_COND_MSG(!is_symbol(p_open_key[i]), "auto brace completion open key must be a symbol");
	}
	for (int i = 0; i < p_close_key.length(); i++) {
		ERR_FAIL_COND_MSG(!is_symbol(p_close_key[i]), "auto brace completion close key must be a symbol");
	}
	int at = 0;
	for (int i = 0; i < auto_brace_completion_pairs.size(); i++) {
		ERR_FAIL_COND_MSG(auto_brace_completion_pairs[i].open_key == p_open_key, "auto brace completion open key '" + p_open_key + "' already exists.");
		if (p_open_key.length() < auto_brace_completion_pairs[i].open_key.length()) {
			at++;
		}
	}
	BracePair brace_pair;
	brace_pair.open_key = p_open_key;
	brace_pair.close_key = p_close_key;
	auto_brace_completion_pairs.insert(at, brace_pair);
}
void CodeEdit::set_auto_brace_completion_pairs(const Dictionary &p_auto_brace_completion_pairs) {