### 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 (; line_col < cc; line_col++) {
				char32_t c = line[line_col];
				if (auto_indent_prefixes.has(c) && is_in_comment(cl, line_col) == -1) {
					should_indent = true;
					indent_char = c;
					continue;
				}
				
				
				if (should_indent && (!is_whitespace(c) && is_in_comment(cl, line_col + 1) == -1)) {
					should_indent = false;
				}
			}
			if (should_indent) {
				ins += indent_text;
				String closing_pair = get_auto_brace_completion_close_key(String::chr(indent_char));
				if (!closing_pair.is_empty() && line.find(closing_pair, cc) == cc) {
					
					if (p_split_current_line) {
						brace_indent = true;
						ins += "\n" + ins.substr(indent_text.size(), ins.length() - 2);
					} else {
						brace_indent = false;
						ins = "\n" + ins.substr(indent_text.size(), ins.length() - 2);
					}
				}
			}
		}
		bool first_line = false;
		if (!p_split_current_line) {