### 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
int current_element = 0;
		while (gdscript_function_renames[current_element][0] != ) {
			String name_3_x = gdscript_function_renames[current_element][0];
			String name_4_0 = gdscript_function_renames[current_element][1];
			if (!all_functions.has(gdscript_function_renames[current_element][1])) {
				ERR_PRINT(vformat("Missing GDScript function in pair (%s - ===> %s <===)", name_3_x, name_4_0));
				valid = false;
			
			current_element++;
		
	
	if (!valid) {
		ERR_PRINT("Found function which is used in the converter, but it cannot be found in Godot 4. Rename this element or remove its entry if it's obsolete.");
	
	valid = valid && test_single_array(enum_renames);
	valid = valid && test_single_array(class_renames, true);
	valid = valid && test_single_array(gdscript_function_renames, true);
	valid = valid && test_single_array(csharp_function_renames, true);
	valid = valid && test_single_array(gdscript_properties_renames, true);
	valid = valid && test_single_array(csharp_properties_renames, true);
	valid = valid && test_single_array(shaders_renames, true);
	valid = valid && test_single_array(gdscript_signals_renames);
	valid = valid && test_single_array(project_settings_renames);
	valid = valid && test_single_array(builtin_types_renames);
	valid = valid && test_single_array(cor_renames);
	return valid;
// Validates the array to prevent cyclic renames, such as `Node` -> `Node2D`, then `Node2D` -> `2DNode`.
// Also checks if names contain leading or trailing spaces.
bool rter3To4::test_single_array(const char *p_array[][2], bool p_ignore_4_0_name) {