### 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
if (code_completion_base.is_numeric()) {
		cancel_code_completion();
		return;
	}
	int max_width = 0;
	String string_to_complete_lower = string_to_complete.to_lower();
	for (ScriptLanguage::CodeCompletionOption &option : code_completion_option_sources) {
		option.matches.clear();
		if (single_quote && option.display.is_quoted()) {
			option.display = option.display.unquote().quote("'");
		}
		int offset = option.default_value.get_type() == Variant::COLOR ? line_height : 0;
		if (in_string != -1) {
			String quote = single_quote ? "'" : "\"";
			option.display = option.display.unquote().quote(quote);
			option.insert_text = option.insert_text.unquote().quote(quote);
		}
		if (option.display.length() == 0) {
			continue;
		}
		if (string_to_complete.length() == 0) {
			option.get_option_characteristics(string_to_complete);
			code_completion_options_new.push_back(option);
			if (theme_cache.font.is_valid()) {
				max_width = MAX(max_width, theme_cache.font->get_string_size(option.display, HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size).width + offset);
			}
			continue;
		}
		String target_lower = option.display.to_lower();
		int long_option = target_lower.size() > 50;