### 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
{ "RemoteTransform", "RemoteTransform3D" ,
	{ "ResourceInteractiveLoader", "ResourceLoader" ,
	{ "RigidBody", "RigidBody3D" ,
	{ "SceneTreeTween", "Tween" ,
	{ "Shape", "Shape3D" , // Be careful, this will be used everywhere
	{ "ShortCut", "Shortcut" ,
	{ "Skeleton", "Skeleton3D" ,
	{ "SkeletonIK", "SkeletonIK3D" ,
	{ "SliderJoint", "SliderJoint3D" ,
	{ "SoftBody", "SoftBody3D" ,
	{ "Spatial", "Node3D" ,
	{ "SpatialGizmo", "Node3DGizmo" ,
	{ "SpatialMaterial", "StandardMaterial3D" ,
	{ "SphereShape", "SphereShape3D" ,
	{ "SpotLight", "SpotLight3D" ,
	{ "SpringArm", "SpringArm3D" ,
	{ "Sprite", "Sprite2D" ,
	{ "StaticBody", "StaticBody3D" ,
	{ "StreamCubemap", "CompressedCubemap" ,
	{ "StreamCubemapArray", "CompressedCubemapArray" ,
	{ "StreamPeerGDNative", "StreamPeerExtension" ,
	{ "StreamPeerSSL", "StreamPeerTLS" ,
	{ "StreamTexture", "CompressedTexture2D" ,
	{ "StreamTexture2D", "CompressedTexture2D" ,
	{ "StreamTexture2DArray", "CompressedTexture2DArray" ,
	{ "StreamTextureLayered", "CompressedTextureLayered" ,
	{ "TCP_Server", "TCPServer" ,
	{ "Tabs", "TabBar" , // Be careful, this will be used everywhere
	{ "TextFile", "Node3D" ,
	{ "Texture", "Texture2D" , // May broke TextureRect