### 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
{ "CollisionShape", "CollisionShape3D" ,
	{ "ConcavePolygonShape", "ConcavePolygonShape3D" ,
	{ "ConeTwistJoint", "ConeTwistJoint3D" ,
	{ "ConvexPolygonShape", "ConvexPolygonShape3D" ,
	{ "CubeMap", "Cubemap" ,
	{ "CubeMesh", "BoxMesh" ,
	{ "CylinderShape", "CylinderShape3D" ,
	{ "DirectionalLight", "DirectionalLight3D" ,
	{ "DynamicFont", "FontFile" ,
	{ "DynamicFontData", "FontFile" ,
	{ "EditorNavigationMeshGenerator", "NavigationMeshGenerator" ,
	{ "EditorSceneImporter", "EditorSceneFormatImporter" ,
	{ "EditorSceneImporterFBX", "EditorSceneFormatImporterFBX" ,
	{ "EditorSceneImporterGLTF", "EditorSceneFormatImporterGLTF" ,
	{ "EditorSpatialGizmo", "EditorNode3DGizmo" ,
	{ "EditorSpatialGizmoPlugin", "EditorNode3DGizmoPlugin" ,
	{ "ExternalTexture", "ImageTexture" ,
	{ "FuncRef", "Callable" ,
	{ "GIProbe", "VoxelGI" ,
	{ "GIProbeData", "VoxelGIData" ,
	{ "Generic6DOFJoint", "Generic6DOFJoint3D" ,
	{ "Geometry", "Geometry2D" , // Geometry class is split between Geometry2D and Geometry3D so we need to choe one
	{ "GeometryInstance", "GeometryInstance3D" ,
	{ "GradientTexture", "GradientTexture2D" ,
	{ "HeightMapShape", "HeightMapShape3D" ,
	{ "HingeJoint", "HingeJoint3D" ,
	{ "IP_Unix", "IPUnix" ,
	{ "ImmediateGeometry", "ImmediateMesh" ,
	{ "ImmediateGeometry3D", "ImmediateMesh" ,
	{ "InterpolatedCamera", "Camera3D" ,