make sure key/keyCode works with special keys likes ESC, TAB, etc.

```
// Both key and keyCode will be equal to these values
BACKSPACE: 8,
TAB: 9,
ENTER: 10,
RETURN: 13,
ESC: 27,
DELETE: 127,
CODED: 0xffff,

// p.key will be CODED and p.keyCode will be this value
SHIFT: 16,
CONTROL: 17,
ALT: 18,
CAPSLK: 20,
PGUP: 33,
PGDN: 34,
END: 35,
HOME: 36,
LEFT: 37,
UP: 38,
RIGHT: 39,
DOWN: 40,
```

The issue provides no file or test pointers. Start by locating the keyboard handling for key and keyCode, then verify behavior for the listed special keys and modifier keys; done means those values match the mappings in the issue.

Written by the indexing model from the issue text.