### 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 (!code_completion_active) {
		return;
	}
	code_completion_forced = false;
	code_completion_active = false;
	is_code_completion_drag_started = false;
	queue_redraw();
}
void CodeEdit::set_line_length_guidelines(TypedArray<int> p_guideline_columns) {
	line_length_guideline_columns = p_guideline_columns;
	queue_redraw();
}
TypedArray<int> CodeEdit::get_line_length_guidelines() const {
	return line_length_guideline_columns;
}
void CodeEdit::set_symbol_lookup_on_click_enabled(bool p_enabled) {
	symbol_lookup_on_click_enabled = p_enabled;
	set_symbol_lookup_word_as_valid(false);
}
bool CodeEdit::is_symbol_lookup_on_click_enabled() const {