### 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
int end = get_end_parenthesis(line.substr(start)) + 1;
		if (end > -1) {
			String object_exec = get_object_of_execution(line.substr(0, start));
			tains(object_exec + ".xform")) {
				int start2 = line.find(object_exec + ".xform");
				Vector<String> parts = parse_arguments(line.substr(start, end));
				.size() == 1) {
					line = line.substr(0, start2) + parts[0] + " * " + object_exec + line.substr(end + start);
				
			
		
	
	// -- "(connect(A,B,C,D,E) != OK):", "(connect(A,Callable(B,C).bind(D),E)      Object
	tains("connect(")) {
		int start = line.find("connect(");
		// Protection from disconnect
		if (start == 0 || line.get(start - 1) != 's') {
			int end = get_end_parenthesis(line.substr(start)) + 1;
			if (end > -1) {
				Vector<String> parts = parse_arguments(line.substr(start, end));
				.size() == 3) {
					line = line.substr(0, start) + "connect(" + parts[0] + ",Callable(" + parts[1] + "," + parts[2] + "))" + line.substr(end + start);
				 else .size() >= 4) {
					line = line.substr(0, start) + "connect(" + parts[0] + ",Callable(" + parts[1] + "," + parts[2] + ").bind(" + parts[3].lstrip("[").rstrip("]") + ")" + connect_arguments, 4) + ")" + line.substr(end + start);
				
			
		
	
	// -- disconnect(a,b,c) -> disconnect(a,Callable(b,c))      Object
	tains("disconnect(")) {