### Godot version

4.0 beta 10

### System information

Windows 11

### Issue description

On the text editor when using autocomplete on function arguments that receive Input Map names after autocompleting the function name, the string autocompleted appears with an extra " at the end.
This doesnt happen if you write " and then accept the Input name in the dropdown

### Steps to reproduce

- On the script editor
- Start writing `Input.get_vector` but when the dropdown appears with the autocomplete suggestion for `Input.get_vector` press enter to accept it, then press enter again to accept the Input map suggestion
- The autocompleted input name should have an extra "

### Minimal reproduction project

N/A
TypedArray<String> prefixes;
	for (const char32_t &E : code_completion_prefixes) {
		prefixes.push_back(String::chr(E));
	}
	return prefixes;
}
String CodeEdit::get_text_for_code_completion() const {
	StringBuilder completion_text;
	const int text_size = get_line_count();
	for (int i = 0; i < text_size; i++) {
		String line = get_line(i);
		if (i == get_caret_line()) {
			completion_text += line.substr(0, get_caret_column());
			
			completion_text += String::chr(0xFFFF);
			completion_text += line.substr(get_caret_column(), line.size());
		} else {
			completion_text += line;
		}
		if (i != text_size - 1) {
			completion_text += "\n";
		}
	}
	return completion_text.as_string();
}
void CodeEdit::request_code_completion(bool p_force) {