### 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
{ "InterpolatedCamera3D", "Camera3D" ,
	{ "JSONParseResult", "JSON" ,
	{ "Joint", "Joint3D" ,
	{ "KinematicBody", "CharacterBody3D" ,
	{ "KinematicBody2D", "CharacterBody2D" ,
	{ "KinematicCollision", "KinematicCollision3D" ,
	{ "LargeTexture", "ImageTexture" ,
	{ "Light", "Light3D" ,
	{ "Light2D", "PointLight2D" ,
	{ "LineShape2D", "WorldBoundaryShape2D" ,
	{ "Listener", "AudioListener3D" ,
	{ "Listener2D", "AudioListener2D" ,
	{ "MeshInstance", "MeshInstance3D" ,
	{ "MultiMeshInstance", "MultiMeshInstance3D" ,
	{ "MultiplayerPeerGDNative", "MultiplayerPeerExtension" ,
	{ "Navigation", "Node3D" ,
	{ "Navigation2D", "Node2D" ,
	{ "Navigation2DServer", "NavigationServer2D" ,
	{ "Navigation3D", "Node3D" ,
	{ "NavigationAgent", "NavigationAgent3D" ,
	{ "NavigationMeshInstance", "NavigationRegion3D" ,
	{ "NavigationObstacle", "NavigationObstacle3D" ,
	{ "NavigationPolygonInstance", "NavigationRegion2D" ,
	{ "NavigationRegion", "NavigationRegion3D" ,
	{ "NavigationServer", "NavigationServer3D" ,
	{ "NetworkedMultiplayerENet", "ENetMultiplayerPeer" ,
	{ "NetworkedMultiplayerPeer", "MultiplayerPeer" ,
	{ "Occluder", "OccluderInstance3D" ,
	{ "OmniLight", "OmniLight3D" ,
	{ "PHashTranslation", "OptimizedTranslation" ,