fix(superinput): various ux bugs

[Raid55]

• [x] Entering first key, cursor shifts to the left.
• [x] on autofocus, cursor shows up at start of string instead of end
• [x] eval pannel's text overflows past border when too much text

[linear[bot]]

DEV-2354 fix(superinput): various ux bugs

* [X] Entering first key, cursor shifts to the left. * [X] on autofocus, cursor shows up at start of string instead of end * [X] eval pannel's text overflows past border when too much text