### 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
if (p_to_line < p_from_line) {
			for (int i = end_line; i > start_line; i--) {
				delimiter_cache.remove_at(i);
			}
		} else {
			for (int i = start_line; i < end_line; i++) {
				delimiter_cache.insert(i, RBMap<int, int>());
			}
		}
	}
	int in_region = -1;
	for (int i = start_line; i < MIN(end_line + 1, line_count); i++) {
		int current_end_region = (i <= 0 || delimiter_cache[i].size() < 1) ? -1 : delimiter_cache[i].back()->value();
		in_region = (i <= 0 || delimiter_cache[i - 1].size() < 1) ? -1 : delimiter_cache[i - 1].back()->value();
		const String &str = get_line(i);
		const int line_length = str.length();
		delimiter_cache.write[i].clear();
		if (str.length() == 0) {
			if (in_region != -1) {
				delimiter_cache.write[i][0] = in_region;
			}
			if (i == end_line && current_end_region != in_region) {
				end_line++;
				end_line = MIN(end_line, line_count);
			}
			continue;
		}
		int end_region = -1;
		for (int j = 0; j < line_length; j++) {
			int from = j;