### 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)

String empty_space;
	int current_character = 0;
	if (line.is_empty()) {
		return empty_space;
	}
	if (line[0] == ' ') {
		while (current_character < line.size()) {
			if (line[current_character] == ' ') {
				empty_space += ' ';
				current_character++;
			} else {
				break;
			}
		}
	}
	if (line[0] == '\t') {
		while (current_character < line.size()) {
			if (line[current_character] == '\t') {
				empty_space += '\t';
				current_character++;
			} else {
				break;
			}
		}
	}
	return empty_space;
}
// Returns the object that’s executing the function in the line.
// e.g. Passing the line "var roman = kieliszek.funkcja()" to this function returns "kieliszek".
String ProjectConverter3To4::get_object_of_execution(const String &line) const {