### 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
{ "handle_menu_selected", "_handle_menu_selected" , 
	{ "handles_type", "_handles_type" , 
	{ "has_cor", "has_theme_cor" , 
	{ "has_cor_override", "has_theme_cor_override" , 
	{ "has_constant", "has_theme_constant" , 
	{ "has_constant_override", "has_theme_constant_override" , 
	{ "has_filter", "_has_filter" , 
	{ "has_font", "has_theme_font" , 
	{ "has_font_override", "has_theme_font_override" , 
	{ "has_icon", "has_theme_icon" , 
	{ "has_icon_override", "has_theme_icon_override" , 
	{ "has_main_screen", "_has_main_screen" , 
	{ "has_network_peer", "has_multiplayer_peer" , 
	{ "has_stylebox", "has_theme_stylebox" , 
	{ "has_stylebox_override", "has_theme_stylebox_override" , 
	{ "http_escape", "uri_encode" , 
	{ "http_unescape", "uri_decode" , 
	{ "import_scene_from_other_importer", "_import_scene" , 
	{ "instance_set_surface_material", "instance_set_surface_override_material" , 
	{ "interpolate", "sample" , 
	{ "intersect_polygons_2d", "intersect_polygons" , 
	{ "intersect_polyline_with_polygon_2d", "intersect_polyline_with_polygon" , 
	{ "is_a_parent_of", "is_ancestor_of" , 
	{ "is_commiting_action", "is_committing_action" , 
	{ "is_doubleclick", "is_double_click" , 
	{ "is_draw_red", "is_draw_warning" , 
	{ "is_folw_smoothing_enabled", "is_pition_smoothing_enabled" , 
	{ "is_h_drag_enabled", "is_drag_horizontal_enabled" , 
	{ "is_handle_highlighted", "_is_handle_highlighted" , 
	{ "is_inverting_faces", "get_flip_faces" ,