### 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
{ "HasIconOverride", "HasThemeIconOverride" , 
	{ "HasMainScreen", "_HasMainScreen" , 
	{ "HasNetworkPeer", "HasMultiplayerPeer" , 
	{ "HasStylebox", "HasThemeStylebox" , 
	{ "HasStyleboxOverride", "HasThemeStyleboxOverride" , 
	{ "HttpEscape", "UriEncode" , 
	{ "HttpUnescape", "UriDecode" , 
	{ "ImportAnimationFromOtherImporter", "_ImportAnimation" , 
	{ "ImportSceneFromOtherImporter", "_ImportScene" , 
	{ "InstanceSetSurfaceMaterial", "InstanceSetSurfaceOverrideMaterial" , 
	{ "IntersectPolygons2d", "IntersectPolygons" , 
	{ "IntersectPolylineWithPolygon2d", "IntersectPolylineWithPolygon" , 
	{ "IsAParentOf", "IsAncestorOf" , 
	{ "IsCommitingAction", "IsCommittingAction" , 
	{ "IsDoubleclick", "IsDoubleClick" , 
	{ "IsFolwSmoothingEnabled", "IsPitionSmoothingEnabled" , 
	{ "IsHDragEnabled", "IsDragHorizontalEnabled" , 
	{ "IsHandleHighlighted", "_IsHandleHighlighted" , 
	{ "IsNetworkMaster", "IsMultiplayerAuthority" , 
	{ "IsNetworkServer", "IsServer" , 
	{ "IsNormalmap", "IsNormalMap" , 
	{ "IsRefusingNewNetworkConnections", "IsRefusingNewConnections" , 
	{ "IsRegion", "IsRegionEnabled" , 
	{ "IsRotating", "IsIgnoringRotation" , 
	{ "IsScancodeUnicode", "IsKeycodeUnicode" , 
	{ "IsSelectableWhenHidden", "_IsSelectableWhenHidden" , 
	{ "IsSetAsToplevel", "IsSetAsTopLevel" , 
	{ "IsShortcut", "MatchesEvent" , 
	{ "IsSizeOverrideStretchEnabled", "IsSize2dOverrideStretchEnabled" , 
	{ "IsSortEnabled", "IsYSortEnabled" ,