### 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
// -- func _init(p_x:int)->void:  -> func _init(p_x:int):    Object # https://github.com/godotengine/godot/issues/50589
	tains(" _init(")) {
		int start = line.find(" _init(");
		tains(":")) {
			int end = line.rfind(":") + 1;
			if (end > -1) {
				Vector<String> parts = parse_arguments(line.substr(start, end));
				line = line.substr(0, start) + " _init(" + connect_arguments, 0) + "):" + line.substr(end + start);
			
		
	
	//  assert(speed < 20, str(randi()%10))  ->  assert(speed < 20) #,str(randi()%10))    GDScript - GDScript bug constant message
	tains("assert(")) {
		int start = line.find("assert(");
		int end = get_end_parenthesis(line.substr(start)) + 1;
		if (end > -1) {
			Vector<String> parts = parse_arguments(line.substr(start, end));
			.size() == 2) {
				line = line.substr(0, start) + "assert(" + parts[0] + ") " + line.substr(end + start) + "#," + parts[1] + ")";
			
		
	
	//  create_from_image(aa, bb)  ->   create_from_image(aa) #, bb   ImageTexture
	tains("create_from_image(")) {
		int start = line.find("create_from_image(");
		int end = get_end_parenthesis(line.substr(start)) + 1;