### 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 (k->is_action("ui_page_up", true)) {
			code_completion_current_selected = MAX(0, code_completion_current_selected - theme_cache.code_completion_max_lines);
			code_completion_force_item_center = -1;
			queue_redraw();
			accept_event();
			return;
		}
		if (k->is_action("ui_page_down", true)) {
			code_completion_current_selected = MIN(code_completion_options.size() - 1, code_completion_current_selected + theme_cache.code_completion_max_lines);
			code_completion_force_item_center = -1;
			queue_redraw();
			accept_event();
			return;
		}
		if (k->is_action("ui_text_caret_line_start", true) || k->is_action("ui_text_caret_line_end", true)) {
			cancel_code_completion();
		}
		if (k->is_action("ui_text_completion_replace", true) || k->is_action("ui_text_completion_accept", true)) {
			confirm_code_completion(k->is_action("ui_text_completion_replace", true));
			accept_event();
			return;
		}
		if (k->is_action("ui_cancel", true)) {
			cancel_code_completion();
			accept_event();
			return;
		}
		if (k->is_action("ui_text_backspace", true)) {
			backspace();
			_filter_code_completion_candidates_impl();