### 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
{ "normalmap_to_xy", "normal_map_to_xy" , 
	polygon_2d", "offset_polygon" , 
	polyline_2d", "offset_polyline" , 
	{ "percent_decode", "uri_decode" , 
	{ "percent_encode", "uri_encode" , 
	{ "pin_joint_create", "joint_make_pin" , 
	{ "popup_centered_minsize", "popup_centered_clamped" , 
	{ "pt_import", "_pt_import" , 
	{ "print_stray_nodes", "print_orphan_nodes" , 
	{ "property_list_changed_notify", "notify_property_list_changed" , 
	{ "raise", "move_to_front" , 
	{ "recognize", "_recognize" , 
	{ "regen_normalmaps", "regen_normal_maps" , 
	{ "remove", "remove_at" , 
	{ "remove_animation", "remove_animation_library" , 
	{ "remove_cor_override", "remove_theme_cor_override" , 
	{ "remove_constant_override", "remove_theme_constant_override" , 
	{ "remove_font_override", "remove_theme_font_override" , 
	{ "remove_icon_override", "remove_theme_icon_override" , 
	{ "remove_scene_import_plugin", "remove_scene_format_importer_plugin" , 
	{ "remove_spatial_gizmo_plugin", "remove_node_3d_gizmo_plugin" , 
	{ "remove_stylebox_override", "remove_theme_stylebox_override" , 
	{ "rename_animation", "rename_animation_library" , 
	{ "rename_dependencies", "_rename_dependencies" , 
	{ "save_external_data", "_save_external_data" , 
	{ "segment_intersects_segment_2d", "segment_intersects_segment" , 
	{ "set_adjustment_enable", "set_adjustment_enabled" , 
	{ "set_alt", "set_alt_pressed" , 
	{ "set_anchor_and_margin", "set_anchor_and_offset" , 
	{ "set_anchors_and_margins_preset", "set_anchors_and_offsets_preset" ,