### 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
{ "ARVROrigin", "XROrigin3D" ,
	{ "ARVRPitionalTracker", "XRPitionalTracker" ,
	{ "ARVRServer", "XRServer" ,
	{ "AStar", "AStar3D" ,
	{ "AnimatedSprite", "AnimatedSprite2D" ,
	{ "AnimationTreePlayer", "AnimationTree" ,
	{ "Area", "Area3D" , // Be careful, this will be used everywhere
	{ "AudioStreamOGGVorbis", "AudioStreamOggVorbis" ,
	{ "AudioStreamRandomPitch", "AudioStreamRandomizer" ,
	{ "AudioStreamSample", "AudioStreamWAV" ,
	{ "BakedLightmap", "LightmapGI" ,
	{ "BakedLightmapData", "LightmapGIData" ,
	{ "BitmapFont", "FontFile" ,
	{ "BoneAttachment", "BoneAttachment3D" ,
	{ "BoxShape", "BoxShape3D" ,
	{ "CPUParticles", "CPUParticles3D" ,
	{ "CSGBox", "CSGBox3D" ,
	{ "CSGCombiner", "CSGCombiner3D" ,
	{ "CSGCylinder", "CSGCylinder3D" ,
	{ "CSGMesh", "CSGMesh3D" ,
	{ "CSGPolygon", "CSGPolygon3D" ,
	{ "CSGPrimitive", "CSGPrimitive3D" ,
	{ "CSGShape", "CSGShape3D" ,
	{ "CSGSphere", "CSGSphere3D" ,
	{ "CSGTorus", "CSGTorus3D" ,
	{ "Camera", "Camera3D" , // Be careful, this will be used everywhere
	{ "CapsuleShape", "CapsuleShape3D" ,
	{ "ClippedCamera", "Camera3D" ,
	{ "CollisionObject", "CollisionObject3D" ,
	{ "CollisionPolygon", "CollisionPolygon3D" ,