### 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
{ "GetOneshot", "GetOneShot" , 
	{ "GetOk", "GetOkButton" , 
	{ "GetOptionVisibility", "_GetOptionVisibility" , 
	{ "GetParameterDefaultValue", "_GetParameterDefaultValue" , 
	{ "GetParameterList", "_GetParameterList" , 
	{ "GetParentSpatial", "GetParentNode3d" , 
	{ "GetlScancode", "GetlKeycode" , 
	{ "GetlScancodeWithModifiers", "GetlKeycodeWithModifiers" , 
	{ "GetPluginIcon", "_GetPluginIcon" , 
	{ "GetPluginName", "_GetPluginName" , 
	{ "GetPresetCount", "_GetPresetCount" , 
	{ "GetPresetName", "_GetPresetName" , 
	{ "GetRecognizedExtensions", "_GetRecognizedExtensions" , 
	{ "GetRenderInfo", "GetRenderingInfo" , 
	{ "GetRenderTargetsize", "GetRenderTargetSize" , 
	{ "GetResourceType", "_GetResourceType" , 
	{ "GetResult", "GetData" , 
	{ "GetReverbBus", "GetReverbBusName" , 
	{ "GetRpcSenderId", "GetRemoteSenderId" , 
	{ "GetSaveExtension", "_GetSaveExtension" , 
	{ "GetScancode", "GetKeycode" , 
	{ "GetScancodeString", "GetKeycodeString" , 
	{ "GetScancodeWithModifiers", "GetKeycodeWithModifiers" , 
	{ "GetShift", "IsShiftPressed" , 
	{ "GetSizeOverride", "GetSize2dOverride" , 
	{ "GetSlipsOnSpe", "GetSlideOnSpe" , 
	{ "GetSpaceOverrideMode", "GetGravitySpaceOverrideMode" , 
	{ "GetSpatialNode", "GetNode3d" , 
	{ "GetSpeed", "GetVecity" , 
	{ "GetStyleboxTypes", "GetStyleboxTypeList" ,