### 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
insert_text_at_caret(selection_text + close_key, i);
					set_caret_column(get_caret_column(i) - 1, i == 0, i);
				}
			} else {
				int caret_move_offset = 1;
				int post_brace_pair = cc < get_line(cl).length() ? _get_auto_brace_pair_close_at_pos(cl, cc) : -1;
				if (has_string_delimiter(chr) && cc > 0 && !is_symbol(get_line(cl)[cc - 1]) && post_brace_pair == -1) {
					insert_text_at_caret(chr, i);
				} else if (cc < get_line(cl).length() && !is_symbol(get_line(cl)[cc])) {
					insert_text_at_caret(chr, i);
				} else if (post_brace_pair != -1 && auto_brace_completion_pairs[post_brace_pair].close_key[0] == chr[0]) {
					caret_move_offset = auto_brace_completion_pairs[post_brace_pair].close_key.length();
				} else if (is_in_comment(cl, cc) != -1 || (is_in_string(cl, cc) != -1 && has_string_delimiter(chr))) {
					insert_text_at_caret(chr, i);
				} else {
					insert_text_at_caret(chr, i);
					int pre_brace_pair = _get_auto_brace_pair_open_at_pos(cl, cc + 1);
					if (pre_brace_pair != -1) {
						insert_text_at_caret(auto_brace_completion_pairs[pre_brace_pair].close_key, i);
					}
				}
				set_caret_column(cc + caret_move_offset, i == 0, i);
			}
		} else {
			insert_text_at_caret(chr, i);
		}
	}
	end_action();
}
void CodeEdit::_backspace_internal(int p_caret) {