### 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
// -- Disconnect(a,b,c) -> Disconnect(a,Callable(b,c))      Object
	tains("Disconnect(")) {
		int start = line.find("Disconnect(");
		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) + "Disconnect(" + parts[0] + ",new Callable(" + parts[1] + "," + parts[2] + "))" + line.substr(end + start);
			
		
	
	// -- IsConnected(a,b,c) -> IsConnected(a,Callable(b,c))      Object
	tains("IsConnected(")) {
		int start = line.find("IsConnected(");
		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) + "IsConnected(" + parts[0] + ",new Callable(" + parts[1] + "," + parts[2] + "))" + line.substr(end + start);
			
		
	
void rter3To4::rename_csharp_functions(Vector<String> &lines, const RegExContainer &reg_container) {
	for (String &line : lines) {
		if (uint64_t(line.length()) <= maximum_line_length) {
			process_csharp_line(line, reg_container);