**What** - Updates the Toast component and `toast` util to match the latest design. - Updates every usage of `toast` as `dismissableLabel` is no longer a valid prop, as we now render a X mark instead of a text button.
**What** - Updates the Toast component and `toast` util to match the latest design. - Updates every usage of `toast` as `dismissableLabel` is no longer a valid prop, as we now render a X mark instead of a text button.