### Godot version

v4.0.3.rc2.official [2ac4e3bb3]

### System information

Windows 10

### Issue description

It seems that joypad button numbers are changed in Godot 4. The Godot 3->4 conversion doesn't change the button numbers.

This Godot 3 Input Map:

![kuva](https://github.com/godotengine/godot/assets/49998025/86a7db2a-b5b5-48a3-84f9-999de1ed584a)

is converted to this:

![kuva](https://github.com/godotengine/godot/assets/49998025/30ef5803-0559-4408-b0ac-e878bf167ff7)

It seems that only buttons 0-3 are same in Godot 3 and 4:

![kuva](https://github.com/godotengine/godot/assets/49998025/37818929-9582-4a11-bdbe-617fd51dd501)


### Steps to reproduce

Convert any Godot 3 project having joypad buttons assigned to inputs.

### Minimal reproduction project

[conv_test.zip](https://github.com/godotengine/godot/files/11525027/conv_test.zip)

bool valid = true;
	Vector<String> names = Vector<String>();
	
	{
		for (unsigned int current_index = 0; RenamesMap3To4::class_renames[current_index][0]; current_index++) {
			const String old_class = RenamesMap3To4::class_renames[current_index][0];
			const String new_class = RenamesMap3To4::class_renames[current_index][1];
			
			if (ClassDB::class_exists(StringName(old_class)) && old_class != "Light2D" && old_class != "Texture" && old_class != "Viewport") {
				ERR_PRINT(vformat("Class \"%s\" exists in Godot 4.0, so it cannot be renamed to something else.", old_class));
				valid = false; 
			}
			
			if (!ClassDB::class_exists(StringName(new_class)) && new_class != "Callable") {
				ERR_PRINT(vformat("Class \"%s\" does not exist in Godot 4.0, so it cannot be used in the conversion.", old_class));
				valid = false; 
			}