### 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 (!is_editable() || !code_completion_active) {
		return;
	}
	if (GDVIRTUAL_CALL(_confirm_code_completion, p_replace)) {
		return;
	}
	char32_t caret_last_completion_char = 0;
	begin_complex_operation();
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	for (const int &i : caret_edit_order) {
		int caret_line = get_caret_line(i);
		const String &insert_text = code_completion_options[code_completion_current_selected].insert_text;
		const String &display_text = code_completion_options[code_completion_current_selected].display;
		if (p_replace) {
			
			const String line = get_line(caret_line);
			int caret_col = get_caret_column(i);
			int caret_remove_line = caret_line;
			bool merge_text = true;
			int in_string = is_in_string(caret_line, caret_col);
			if (in_string != -1) {
				Point2 string_end = get_delimiter_end_position(caret_line, caret_col);
				if (string_end.x != -1) {