### 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
for (; from < line_length; from++) {
				if (str[from] == '\\') {
					from++;
					continue;
				}
				break;
			}
			
			bool same_line = false;
			if (in_region == -1) {
				for (int d = 0; d < delimiters.size(); d++) {
					
					int chars_left = line_length - from;
					int start_key_length = delimiters[d].start_key.length();
					int end_key_length = delimiters[d].end_key.length();
					if (chars_left < start_key_length) {
						continue;
					}
					
					bool match = true;
					const char32_t *start_key = delimiters[d].start_key.get_data();
					for (int k = 0; k < start_key_length; k++) {
						if (start_key[k] != str[from + k]) {
							match = false;
							break;
						}
					}
					if (!match) {
						continue;
					}