### 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
{ "PacketPeerGDNative", "PacketPeerExtension" ,
	{ "PanoramaSky", "Sky" ,
	{ "Particles", "GPUParticles3D" , // Be careful, this will be used everywhere
	{ "Particles2D", "GPUParticles2D" ,
	{ "ParticlesMaterial", "ParticleProcessMaterial" ,
	{ "Path", "Path3D" , // Be careful, this will be used everywhere
	{ "PathFolw", "PathFolw3D" ,
	{ "lBone", "lBone3D" ,
	{ "Physics2DDirectBodyState", "PhysicsDirectBodyState2D" ,
	{ "Physics2DDirectSpaceState", "PhysicsDirectSpaceState2D" ,
	{ "Physics2DServer", "PhysicsServer2D" ,
	{ "Physics2DServerSW", "GodotPhysicsServer2D" ,
	{ "Physics2DShapeQueryParameters", "PhysicsShapeQueryParameters2D" ,
	{ "Physics2DTestMotionResult", "PhysicsTestMotionResult2D" ,
	{ "PhysicsBody", "PhysicsBody3D" ,
	{ "PhysicsDirectBodyState", "PhysicsDirectBodyState3D" ,
	{ "PhysicsDirectSpaceState", "PhysicsDirectSpaceState3D" ,
	{ "PhysicsServer", "PhysicsServer3D" ,
	{ "PhysicsShapeQueryParameters", "PhysicsShapeQueryParameters3D" ,
	{ "PhysicsTestMotionResult", "PhysicsTestMotionResult3D" ,
	{ "PinJoint", "PinJoint3D" ,
	{ "PlaneShape", "WorldBoundaryShape3D" ,
	{ "PopupDiag", "Popup" ,
	{ "Pition2D", "Marker2D" ,
	{ "Pition3D", "Marker3D" ,
	{ "ProceduralSky", "Sky" ,
	{ "RayCast", "RayCast3D" ,
	{ "RayShape", "SeparationRayShape3D" ,
	{ "RayShape2D", "SeparationRayShape2D" ,
	{ "Reference", "RefCounted" , // Be careful, this will be used everywhere