### 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
#include "project_converter_3_to_4.h"
#include "modules/modules_enabled.gen.h"
const int ERROR_CODE = 77;
#ifdef MODULE_REGE
#include "modules/regex/regex.h"
#include "core/io/dir_access.h"
#include "core//time.h"
#include "core/templates/hash_map.h"
#include "core/templates/list.h"
#include "core/templates/cal_vector.h"
static const char *enum_renames[][2] = {
	
	{ "TYPE_COLOR_ARRAY", "TYPE_PACKED_COLOR_ARRAY" ,
	{ "TYPE_FLOAT64_ARRAY", "TYPE_PACKED_FLOAT64_ARRAY" ,
	{ "TYPE_INT64_ARRAY", "TYPE_PACKED_INT64_ARRAY" ,
	{ "TYPE_INT_ARRAY", "TYPE_PACKED_INT32_ARRAY" ,
	{ "TYPE_QUAT", "TYPE_QUATERNION" ,
	{ "TYPE_RAW_ARRAY", "TYPE_PACKED_BYTE_ARRAY" ,
	{ "TYPE_REAL", "TYPE_FLOAT" ,
	{ "TYPE_REAL_ARRAY", "TYPE_PACKED_FLOAT32_ARRAY" ,
	{ "TYPE_STRING_ARRAY", "TYPE_PACKED_STRING_ARRAY" ,
	{ "TYPE_TRANSFORM", "TYPE_TRANSFORM3D" ,
	{ "TYPE_VECTOR2_ARRAY", "TYPE_PACKED_VECTOR2_ARRAY" ,
	{ "TYPE_VECTOR3_ARRAY", "TYPE_PACKED_VECTOR3_ARRAY" ,