### 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
highlight_matching_braces_enabled = p_enabled;
	queue_redraw();
}
bool CodeEdit::is_highlight_matching_braces_enabled() const {
	return highlight_matching_braces_enabled;
}
void CodeEdit::add_auto_brace_completion_pair(const String &p_open_key, const String &p_close_key) {
	ERR_FAIL_COND_MSG(p_open_key.is_empty(), "auto brace completion open key cannot be empty");
	ERR_FAIL_COND_MSG(p_close_key.is_empty(), "auto brace completion close key cannot be empty");
	for (int i = 0; i < p_open_key.length(); i++) {
		ERR_FAIL_COND_MSG(!is_symbol(p_open_key[i]), "auto brace completion open key must be a symbol");
	}
	for (int i = 0; i < p_close_key.length(); i++) {
		ERR_FAIL_COND_MSG(!is_symbol(p_close_key[i]), "auto brace completion close key must be a symbol");
	}
	int at = 0;
	for (int i = 0; i < auto_brace_completion_pairs.size(); i++) {
		ERR_FAIL_COND_MSG(auto_brace_completion_pairs[i].open_key == p_open_key, "auto brace completion open key '" + p_open_key + "' already exists.");
		if (p_open_key.length() < auto_brace_completion_pairs[i].open_key.length()) {
			at++;
		}
	}
	BracePair brace_pair;
	brace_pair.open_key = p_open_key;
	brace_pair.close_key = p_close_key;
	auto_brace_completion_pairs.insert(at, brace_pair);
}
void CodeEdit::set_auto_brace_completion_pairs(const Dictionary &p_auto_brace_completion_pairs) {