### 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
merge_text = false;
					caret_remove_line = string_end.y;
					caret_col = string_end.x - 1;
				}
			}
			if (merge_text) {
				for (; caret_col < line.length(); caret_col++) {
					if (is_symbol(line[caret_col])) {
						break;
					}
				}
			}
			
			remove_text(caret_line, get_caret_column(i) - code_completion_base.length(), caret_remove_line, caret_col);
			adjust_carets_after_edit(i, caret_line, caret_col - code_completion_base.length(), caret_remove_line, caret_col);
			set_caret_column(get_caret_column(i) - code_completion_base.length(), false, i);
			insert_text_at_caret(insert_text, i);
		} else {
			
			const String line = get_line(caret_line);
			int caret_col = get_caret_column(i);
			int matching_chars = code_completion_base.length();
			for (; matching_chars <= insert_text.length(); matching_chars++) {
				if (caret_col >= line.length() || line[caret_col] != insert_text[matching_chars]) {
					break;
				}
				caret_col++;
			}
			
			remove_text(caret_line, get_caret_column(i) - code_completion_base.length(), caret_line, get_caret_column(i));