### 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
{ "GetSurfaceMaterial", "GetSurfaceOverrideMaterial" , 
	{ "GetSurfaceMaterialCount", "GetSurfaceOverrideMaterialCount" , 
	{ "GetTabDisabled", "IsTabDisabled" , 
	{ "GetTabHidden", "IsTabHidden" , 
	{ "GetTextAlign", "GetTextAlignment" , 
	{ "GetThemeItemTypes", "GetThemeItemTypeList" , 
	{ "GetTimerProcessMode", "GetTimerProcessCallback" , 
	{ "GetTranslation", "GetPition" , 
	{ "GetUnitDb", "GetVolumeDb" , 
	{ "GetUnitOffset", "GetProgressRatio" , 
	{ "GetUseInBakedLight", "IsBakingNavigation" , 
	{ "GetUsedCellsById", "GetUsedCells" , 
	{ "GetVScrollbar", "GetVScrollBar" , 
	{ "GetVisibleName", "_GetVisibleName" , 
	{ "GetWindowLayout", "_GetWindowLayout" , 
	{ "GetWordUnderCursor", "GetWordUnderCaret" , 
	{ "GetWorld", "GetWorld3d" , 
	{ "GetZfar", "GetFar" , 
	{ "GetZnear", "GetNear" , 
	{ "GrooveJointCreate", "JointMakeGroove" , 
	{ "HandleMenuSelected", "_HandleMenuSelected" , 
	{ "HandlesType", "_HandlesType" , 
	{ "HasCor", "HasThemeCor" , 
	{ "HasCorOverride", "HasThemeCorOverride" , 
	{ "HasConstant", "HasThemeConstant" , 
	{ "HasConstantOverride", "HasThemeConstantOverride" , 
	{ "HasFilter", "_HasFilter" , 
	{ "HasFont", "HasThemeFont" , 
	{ "HasFontOverride", "HasThemeFontOverride" , 
	{ "HasIcon", "HasThemeIcon" ,