hamadax2/kivy_arabic_support_MDTextField ? reverse-engineered prompt

Build me a small Kivy app that shows how to use Arabic text properly in an MDTextField.

I want a simple demo screen where I can type Arabic and see it display cleanly, using the custom Arabic support code and fonts in this project. Please make the text fields feel polished, with a clear example of Arabic input, a couple of labels or sample lines, and anything needed so the text renders correctly instead of looking broken or reversed.

Keep it easy to run, and make sure the app works as a clean proof of concept for Arabic text support in KivyMD. If anything about the current setup needs fixing, update it so the example launches and the Arabic field behavior is obvious right away. Feel free to look up current docs online if you need to.