### 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
ERR_FAIL_INDEX_V(p_line, get_line_count(), false);
	if (code_region_start_string.is_empty()) {
		return false;
	}
	return get_line(p_line).strip_edges().begins_with(code_region_end_string);
}
void CodeEdit::add_string_delimiter(const String &p_start_key, const String &p_end_key, bool p_line_only) {
	_add_delimiter(p_start_key, p_end_key, p_line_only, TYPE_STRING);
}
void CodeEdit::remove_string_delimiter(const String &p_start_key) {
	_remove_delimiter(p_start_key, TYPE_STRING);
}
bool CodeEdit::has_string_delimiter(const String &p_start_key) const {
	return _has_delimiter(p_start_key, TYPE_STRING);
}
void CodeEdit::set_string_delimiters(const TypedArray<String> &p_string_delimiters) {
	_set_delimiters(p_string_delimiters, TYPE_STRING);
}
void CodeEdit::clear_string_delimiters() {
	_clear_delimiters(TYPE_STRING);
}
TypedArray<String> CodeEdit::get_string_delimiters() const {
	return _get_delimiters(TYPE_STRING);
}
int CodeEdit::is_in_string(int p_line, int p_column) const {