Add keyboard navigation to the select components

[aaroncox]

https://www.melt-ui.com/docs/builders/select#change-options-with-keyboard

Would be nice on the token selector to navigate up/down through tokens.

[deansallinen]

So it should have been there by default. Turns out, I introduced a bug when adding custom id attributes to the menu components. That was overriding the builder created id and the builder store for the menu couldn't find the element 😂

Fixed in #427