### 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
ScriptLanguage::CodeCompletionOption option;
			option.kind = (ScriptLanguage::CodeCompletionKind)(int)completion_options[i].get("kind");
			option.display = completion_options[i].get("display_text");
			option.insert_text = completion_options[i].get("insert_text");
			option.font_color = completion_options[i].get("font_color");
			option.icon = completion_options[i].get("icon");
			option.location = completion_options[i].get("location");
			option.default_value = completion_options[i].get("default_value");
			int offset = 0;
			if (option.default_value.get_type() == Variant::COLOR) {
				offset = line_height;
			}
			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);
			}
			code_completion_options_new.push_back(option);
		}
		if (_should_reset_selected_option_for_new_options(code_completion_options_new)) {
			code_completion_current_selected = 0;
		}
		code_completion_options = code_completion_options_new;
		code_completion_longest_line = MIN(max_width, theme_cache.code_completion_max_width * theme_cache.font_size);
		code_completion_force_item_center = -1;
		code_completion_active = true;
		queue_redraw();
		return;
	}
	const int caret_line = get_caret_line();
	const int caret_column = get_caret_column();
	const String line = get_line(caret_line);