### 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)

}
	if (line.contains("OS.get_real_window_size")) {
		line = line.replace("OS.get_real_window_size", "get_window().get_size_with_decorations");
	}
	if (line.contains("OS.is_window_focused")) {
		line = line.replace("OS.is_window_focused", "get_window().has_focus");
	}
	if (line.contains("OS.move_window_to_foreground")) {
		line = line.replace("OS.move_window_to_foreground", "get_window().move_to_foreground");
	}
	if (line.contains("OS.request_attention")) {
		line = line.replace("OS.request_attention", "get_window().request_attention");
	}
	if (line.contains("OS.set_window_title")) {
		line = line.replace("OS.set_window_title", "get_window().set_title");
	}
	// 
	if (line.contains("get_tree().set_input_as_handled()")) {
		line = line.replace("get_tree().set_input_as_handled()", "get_viewport().set_input_as_handled()");
	}
	// 
	// 
	if (line.contains("_unhandled_key_input(event: InputEventKey)")) {
		line = line.replace("_unhandled_key_input(event: InputEventKey)", "_unhandled_key_input(event: InputEvent)");
	}
	if (line.contains("Engine.editor_hint")) {
		line = line.replace("Engine.editor_hint", "Engine.is_editor_hint()");
	}
}
void ProjectConverter3To4::process_csharp_line(String &line, const RegExContainer &reg_container) {