### 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
bool valid = true;
	Vector<String> names = Vector<String>();
	igned int current_index = 0; p_array[current_index][0]; current_index++) {
		String name_3_x = p_array[current_index][0];
		String name_4_0 = p_array[current_index][1];
		if (name_3_x != name_3_x.strip_edges()) {
			ERR_PRINT(vformat("Invalid Entry \"%s\" contains leading or trailing spaces.", name_3_x));
			valid = false;
		
		if (names.has(name_3_x)) {
			ERR_PRINT(vformat("Found duplicated entry, pair ( -> %s , %s)", name_3_x, name_4_0));
			valid = false;
		
		names.append(name_3_x);
		if (name_4_0 != name_4_0.strip_edges()) {
			ERR_PRINT(vformat("Invalid Entry \"%s\" contains leading or trailing spaces.", name_3_x));
			valid = false;
		
		if (names.has(name_4_0)) {
			ERR_PRINT(vformat("Found duplicated entry, pair ( -> %s , %s)", name_3_x, name_4_0));
			valid = false;
		
		if (!p_ignore_4_0_name) {
			names.append(name_4_0);
		
	
	return valid;
;
// Returns arguments from given function execution, this cannot be really done as regex.
// `abc(d,e(f,g),h)` -> [d], [e(f,g)], [h]