### 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
{ "get_mid_height", "get_height" , 
	{ "get_motion_remainder", "get_remainder" , 
	{ "get_neighbor_dist", "get_neighbor_distance" , 
	{ "get_network_connected_peers", "get_peers" , 
	{ "get_network_master", "get_multiplayer_authority" , 
	{ "get_network_peer", "get_multiplayer_peer" , 
	{ "get_network_unique_id", "get_unique_id" , 
	{ "get_ok", "get_ok_button" , 
	{ "get_oneshot", "get_one_shot" , 
	{ "get_option_visibility", "_get_option_visibility" , 
	{ "get_parameter_default_value", "_get_parameter_default_value" , 
	{ "get_parameter_list", "_get_parameter_list" , 
	{ "get_parent_spatial", "get_parent_node_3d" , 
	{ "get_pause_mode", "get_process_mode" , 
	{ "get_physical_scancode", "get_physical_keycode" , 
	{ "get_physical_scancode_with_modifiers", "get_physical_keycode_with_modifiers" , 
	{ "get_plugin_icon", "_get_plugin_icon" , 
	{ "get_plugin_name", "_get_plugin_name" , 
	{ "get_preset_count", "_get_preset_count" , 
	{ "get_preset_name", "_get_preset_name" , 
	{ "get_recognized_extensions", "_get_recognized_extensions" , 
	{ "get_render_info", "get_rendering_info" , 
	{ "get_render_targetsize", "get_render_target_size" , 
	{ "get_resource_type", "_get_resource_type" , 
	{ "get_result", "get_data" , 
	{ "get_reverb_bus", "set_reverb_bus_name" , 
	{ "get_rpc_sender_id", "get_remote_sender_id" , 
	{ "get_save_extension", "_get_save_extension" , 
	{ "get_scancode", "get_keycode" , 
	{ "get_scancode_string", "get_keycode_string" ,