### Godot version

v4.0.beta.custom_build [0abd60b95]

### System information

Windows 10, Vulkan

### Issue description

Autocomplete doesn't work when trying to access a scene node that isn't a direct child of the scene root script, using $NodePath (Shorthand for get_node("NodePath") as per docs).

Example:
![image](https://user-images.githubusercontent.com/115422160/212197922-10e73c9f-de10-475e-ac6e-4163fc5b8013.png)

It worked in Godot 3.5:
![3.5](https://user-images.githubusercontent.com/115422160/212197992-61b67a42-86c6-4650-bab4-c7dfa5a67975.PNG)

I should mention that it works if you start by typing the name of a direct child:
![image](https://user-images.githubusercontent.com/115422160/212198641-6d8e6fca-a2d2-47a7-b627-2df95268daf5.png)

But when you have many nodes in the scene and longer names it's a pain to access the last children like that.


### Steps to reproduce

See above or MRP.

### Minimal reproduction project

[autocomplete bug.zip](https://github.com/godotengine/godot/files/10406695/autocomplete.bug.zip)

if (is_code_completion_scroll_hovered != scroll_hovered) {
			is_code_completion_scroll_hovered = scroll_hovered;
			queue_redraw();
		}
		if (is_code_completion_scroll_pressed) {
			_update_scroll_selected_line(mpos.y);
			queue_redraw();
			return;
		}
	}
	Ref<InputEventKey> k = p_gui_input;
	if (TextEdit::alt_input(p_gui_input)) {
		accept_event();
		return;
	}
	bool update_code_completion = false;
	if (!k.is_valid()) {
		TextEdit::gui_input(p_gui_input);
		return;
	}
	
#ifdef MACOS_ENABLED
	if (k->get_keycode() == Key::META) {
#else
	if (k->get_keycode() == Key::CTRL) {
#endif
		if (symbol_lookup_on_click_enabled) {
			if (k->is_pressed() && !is_dragging_cursor()) {
				symbol_lookup_new_word = get_word_at_pos(get_local_mouse_pos());
				if (symbol_lookup_new_word != symbol_lookup_word) {