### 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;
			
		
	
	return empty_space;
// Returns the object that’s executing the function in the line.
// e.g. Passing the line "var roman = kieliszek.funkcja()" to this function returns "kieliszek".
String rter3To4::get_object_of_execution(const String &line) const {
	int end = line.size() - 1; // Last one is \0
	int variable_start = end - 1;
	int start = end - 1;
	bool is_psibly_nodepath = false;
	bool is_valid_nodepath = false;
	while (start >= 0) {
		char32_t character = line[start];
		bool is_variable_char = (character >= 'A' && character <= 'Z') || (character >= 'a' && character <= 'z') || character == '.' || character == '_';
		bool is_nodepath_start = character == '$';
		bool is_nodepath_sep = character == '/';
		if (is_variable_char || is_nodepath_start || is_nodepath_sep) {
			if (start == 0) {
				break;
			 else if (is_nodepath_sep) {
				// Freeze variable_start, try to fetch more chars since this might be a Node path literal.
				is_psibly_nodepath = true;
			 else if (is_nodepath_start) {
				// Found $, this is a Node path literal.
				is_valid_nodepath = true;
				break;
			
			if (!is_psibly_nodepath) {