### 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)

option.matches.append_array(ssq_matches);
				completion_options_subseq.push_back(option);
			}
			if (font.is_valid()) {
				max_width = MAX(max_width, font->get_string_size(option.display, HORIZONTAL_ALIGNMENT_LEFT, -1, font_size).width + offset);
			}
		} else if (!*ssq_lower) { 
			option.matches.clear();
			if (sst_lower_start == 0) { 
				option.matches.push_back(Pair<int, int>(sst_lower_start, string_to_complete.length()));
				completion_options_casei.push_back(option);
			} else if (sst_lower_start > 0) { 
				option.matches.push_back(Pair<int, int>(sst_lower_start, string_to_complete.length()));
				completion_options_substr_casei.push_back(option);
			} else {
				if (ssq_lower_match_len > 0) {
					ssq_lower_matches.push_back(Pair<int, int>(ssq_lower_match_start, ssq_lower_match_len));
				}
				option.matches.append_array(ssq_lower_matches);
				completion_options_subseq_casei.push_back(option);
			}
			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.append_array(completion_options_casei);
	code_completion_options.append_array(completion_options_subseq);
	code_completion_options.append_array(completion_options_subseq_casei);