### Godot version

4.0.2.stable

### System information

Manjaro Linux 5.15.113-1-MANJARO

### Issue description

When I was trying to figure out #77725 i stumbled upon this:
![image](https://github.com/godotengine/godot/assets/14893831/364b89ce-00b2-4aef-a85e-f10c16936005)

pressing enter results in 
![image](https://github.com/godotengine/godot/assets/14893831/07d53b82-c919-4635-80e2-e1809b6bb11f)


It looks simmilar to #48436 , but it started happening to every code completion and I have absolutely no clue how it happened.

It happened after I moved(using shift+arrow keys to select, tab to indent and alt+arrow keys to move down)  the three dicts in the picture to within the function and added the dict 4.

### Steps to reproduce

Here's roughly what I did 
(might be slightly inaccurate, I was basically messing around to try and see the scope of $77725 when it happened)

1) create an empty script
2) declare a couple of dictionaries
3) declare a function
4) try out code completion within the function
5) create a lambda within the function and try 4) again
6) move the dictionaries' declaration within the function using keyboard shortcuts and try 4)




### Minimal reproduction project

N/A
ERR_FAIL_INDEX_V(p_delimiter_idx, delimiters.size(), "");
	return delimiters[p_delimiter_idx].end_key;
}
Point2 CodeEdit::get_delimiter_start_position(int p_line, int p_column) const {
	if (delimiters.size() == 0) {
		return Point2(-1, -1);
	}
	ERR_FAIL_INDEX_V(p_line, get_line_count(), Point2(-1, -1));
	ERR_FAIL_COND_V(p_column - 1 > get_line(p_line).size(), Point2(-1, -1));
	Point2 start_position;
	start_position.y = -1;
	start_position.x = -1;
	bool in_region = ((p_line <= 0 || delimiter_cache[p_line - 1].size() < 1) ? -1 : delimiter_cache[p_line - 1].back()->get()) != -1;
	
	for (const KeyValue<int, int> &E : delimiter_cache[p_line]) {
		if (E.key > p_column) {
			break;
		}
		in_region = E.value != -1;
		start_position.x = in_region ? E.key : -1;
	}
	
	int line_length = get_line(p_line).length();
	if (start_position.x != -1 && line_length > 0 && start_position.x != line_length + 1) {
		start_position.y = p_line;
		return start_position;
	}
	
	if (!in_region) {
		return start_position;