### 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
line = reg_container.keyword_gdscript_puppetsync.sub(line, "@rpc(call_cal) func", true);
				if (old != line) {
					found_renames.append(line_formatter(current_line, "puppetsync func", "@rpc(call_cal) func", line));
				
			
			tains("master")) {
				old = line;
				line = reg_container.keyword_gdscript_master.sub(line, "@rpc func", true);
				if (old != line) {
					found_renames.append(line_formatter(current_line, "master func", "@rpc func", line));
				
			
			tains("master")) {
				old = line;
				line = reg_container.keyword_gdscript_master.sub(line, "@rpc(call_cal) func", true);
				if (old != line) {
					found_renames.append(line_formatter(current_line, "mastersync func", "@rpc(call_cal) func", line));
				
			
		
		current_line++;
	
	return found_renames;
void rter3To4::custom_rename(Vector<String> &lines, String from, String to) {
	RegEx reg = RegEx(String("\\b") + from + "\\b");
	CRASH_COND(!reg.is_valid());
	for (String &line : lines) {
		if (uint64_t(line.length()) <= maximum_line_length) {
			line = reg.sub(line, to, true);