### 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)

}
		TypedArray<Dictionary> completion_options;
		GDVIRTUAL_CALL(_filter_code_completion_candidates, completion_options_sources, completion_options);
		
		if (completion_options.size() == 0) {
			cancel_code_completion();
			return;
		}
		
		int max_width = 0;
		for (i = 0; i < completion_options.size(); i++) {
			ScriptLanguage::CodeCompletionOption option;
			option.kind = (ScriptLanguage::CodeCompletionKind)(int)completion_options[i].get("kind");
			option.display = completion_options[i].get("display_text");
			option.insert_text = completion_options[i].get("insert_text");
			option.font_color = completion_options[i].get("font_color");
			option.icon = completion_options[i].get("icon");
			option.default_value = completion_options[i].get("default_value");
			int offset = 0;
			if (option.default_value.get_type() == Variant::COLOR) {
				offset = line_height;
			}
			if (font.is_valid()) {
				max_width = MAX(max_width, font->get_string_size(option.display, HORIZONTAL_ALIGNMENT_LEFT, -1, font_size).width + offset);
			}
			code_completion_options.push_back(option);
		}
		code_completion_longest_line = MIN(max_width, code_completion_max_width * font_size);
		code_completion_current_selected = 0;
		code_completion_force_item_center = -1;