### 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
valid = valid && test_conversion_gdscript_builtin("(tween_method(A,B,C,D,E,[F,G]).foo())", "(tween_method(Callable(A,B).bind(F,G),C,D,E).foo())", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("(tween_callback(A,B).foo())", "(tween_callback(Callable(A,B)).foo())", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("(tween_callback(A,B,[C,D]).foo())", "(tween_callback(Callable(A,B).bind(C,D)).foo())", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("func _init(", "func _init(", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("func _init(p_x:int)->void:", "func _init(p_x:int):", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("q_PackedDataContainer._iter_init(variable1)", "q_PackedDataContainer._iter_init(variable1)", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("assert(speed < 20, str(randi()%10))", "assert(speed < 20) #,str(randi()%10))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("assert(speed < 2)", "assert(speed < 2)", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("assert(false, \"Missing type --\" + str(argument.type) + \"--, needs to be added to project\")", "assert(false) #,\"Missing type --\" + str(argument.type) + \"--, needs to be added to project\")", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("create_from_image(aa, bb)", "create_from_image(aa) #,bb", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("q_ImageTexture.create_from_image(variable1, variable2)", "q_ImageTexture.create_from_image(variable1) #,variable2", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("set_cell_item(a, b, c, d ,e) # AA", "set_cell_item( Vector3(a,b,c) ,d,e) # AA", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("set_cell_item(a, b)", "set_cell_item(a, b)", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("get_cell_item_orientation(a, b,c)", "get_cell_item_orientation(Vector3i(a,b,c))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("get_cell_item(a, b,c)", "get_cell_item(Vector3i(a,b,c))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("map_to_world(a, b,c)", "map_to_cal(Vector3i(a,b,c))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("PackedStringArray(req_godot).join('.')", "'.'.join(PackedStringArray(req_godot))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("=PackedStringArray(req_godot).join('.')", "='.'.join(PackedStringArray(req_godot))", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("apply_force(pition, impulse)", "apply_force(impulse, pition)", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("apply_impulse(pition, impulse)", "apply_impulse(impulse, pition)", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("draw_rect(a,b,c,d,e).abc", "draw_rect(a,b,c,d).abc# e) TODOGODOT4 Antialiasing argument is missing", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("get_focus_owner()", "get_viewport().gui_get_focus_owner()", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("button.pressed = 1", "button.button_pressed = 1", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("button.pressed=1", "button.button_pressed=1", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_gdscript_builtin("button.pressed SF", "button.pressed SF", &rter3To4::rename_gdscript_functions, "custom rename", reg_container, false);
	valid = valid && test_conversion_with_regex("AAA Cor.white AF", "AAA Cor.WHITE AF", &rter3To4::rename_cors, "custom rename", reg_container);
	// Custom rule conversion
	{
		String from = "instance";
		String to = "instantiate";