### 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
{ "drag_margin_top", "drag_top_margin" , 
	{ "drag_margin_v_enabled", "drag_vertical_enabled" , 
	{ "enabled_focus_mode", "focus_mode" ,  - Removed
	{ "extra_spacing_bottom", "spacing_bottom" , // Font
	{ "extra_spacing_top", "spacing_top" , // Font
	{ "focus_neighbour_bottom", "focus_neighbor_bottom" , 
	{ "focus_neighbour_left", "focus_neighbor_left" , 
	{ "focus_neighbour_right", "focus_neighbor_right" , 
	{ "focus_neighbour_top", "focus_neighbor_top" , 
	{ "folw_viewport_enable", "folw_viewport_enabled" , 
	{ "file_icon_modulate", "file_icon_cor" , 
	{ "files_disabled", "file_disabled_cor" , 
	{ "folder_icon_modulate", "folder_icon_cor" , 
	{ "gbal_rate_scale", "playback_speed_scale" , 
	{ "gravity_distance_scale", "gravity_point_distance_scale" , 
	{ "gravity_vec", "gravity_direction" , 
	{ "hint_tooltip", "tooltip_text" , 
	{ "hseparation", "h_separation" , 
	{ "iterations_per_second", "physics_ticks_per_second" , 
	{ "invert_enable", "invert_enabled" , // Polygon2D
	{ "margin_bottom", "offset_bottom" ,  broke NinePatchRect, StyleBox
	{ "margin_left", "offset_left" ,  broke NinePatchRect, StyleBox
	{ "margin_right", "offset_right" ,  broke NinePatchRect, StyleBox
	{ "margin_top", "offset_top" ,  broke NinePatchRect, StyleBox
	{ "mid_height", "height" , 
	{ "neighbor_dist", "neighbor_distance" , 
	h", "drag_horizontal_offset" , 
	v", "drag_vertical_offset" , 
	{ "off", "unchecked" , 
	{ "off_disabled", "unchecked_disabled" ,