Cursor Jumps When Editing Wide Text Names

[DragonMinded]

When editing your name on options screens that do automatic wide text conversion, the update causes the cursor to jump to the end after every entry. This is annoying, so we should fix it. Putting this as a reminder to myself to look at https://stackoverflow.com/questions/46000544/react-controlled-input-cursor-jumps and see if we can't adopt this approach.