### 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
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CodeEdit, line_length_guideline_color);
	
	BIND_THEME_ITEM_CUSTOM(Theme::DATA_TYPE_STYLEBOX, CodeEdit, style_normal, "normal");
	BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CodeEdit, brace_mismatch_color);
	BIND_THEME_ITEM(Theme::DATA_TYPE_FONT, CodeEdit, font);
	BIND_THEME_ITEM(Theme::DATA_TYPE_FONT_SIZE, CodeEdit, font_size);
	BIND_THEME_ITEM(Theme::DATA_TYPE_CONSTANT, CodeEdit, line_spacing);
}
int CodeEdit::_get_auto_brace_pair_open_at_pos(int p_line, int p_col) {
	const String &line = get_line(p_line);
	
	for (int i = 0; i < auto_brace_completion_pairs.size(); i++) {
		const String &open_key = auto_brace_completion_pairs[i].open_key;
		if (p_col - open_key.length() < 0) {
			continue;
		}
		bool is_match = true;
		for (int j = 0; j < open_key.length(); j++) {
			if (line[(p_col - 1) - j] != open_key[(open_key.length() - 1) - j]) {
				is_match = false;
				break;
			}
		}
		if (is_match) {
			return i;
		}
	}
	return -1;
}
int CodeEdit::_get_auto_brace_pair_close_at_pos(int p_line, int p_col) {