TextBox issues Blocked by Avalonia issues

[stakira]

1. Unicode cannot be displayed unless set to a specific font. However, there is no single font that can display all languages Port WPF's FormattedText to Avalonia and rework TextPresenter AvaloniaUI/Avalonia#4893
2. Input methods are not at the correct location
   In the case of Chinese input method. The position of the prompt box and the text box of the input method is too far away AvaloniaUI/Avalonia#5272
3. On MacOS, Japanese Kana input method does not display preedits
   [RDY] win32 ime AvaloniaUI/Avalonia#6223

[github-actions]

This issue is stale because it has been open for 60 days with no activity. It will be closed if no further activity occurs. Thank you.