### Godot version

Godot 4.0 Beta 11

### System information

Linux Ubunutu

### Issue description

Godot's 3.x project converter to 4.0 seems to be missing the conversion for two drag data related functions.

In 3.x the function for can drop data, was named  `can_drop_data` in 4.0 it is `_can_drop_data`.
And likewise 3.x had `drop_data` and 4.0 has `_drop_data`.

These two functions were not converted by the project converter (and were hard to notice)!


### Steps to reproduce

Convert a 3.x project to 4.0 with the functions: `can_drop_data` it will not convert to `_can_drop_data` nor `drop_data` to `_drop_data`.



### Minimal reproduction project

N/A
break;
			;
			case ']': {
				parts_counter--;
				_counter == 0 && !is_inside_string) {
					parts.append(line.substr(start_part, current_index - start_part));
					start_part = current_index;
				
				break;
			;
			case ',': {
				_counter == 1 && !is_inside_string) {
					parts.append(line.substr(start_part + 1, current_index - start_part - 1));
					start_part = current_index;
				
				break;
			;
			case '"': {
				if (previous_character != '\\')
					is_inside_string = !is_inside_string;
			
		
		previous_character = character;
	
	Vector<String> clean_parts;
	for (String &part : parts) {
		part = part.strip_edges();
		if (!part.is_empty()) {
			clean_parts.append(part);