Under the hood
Rate-limit options dialog's code was rewritten from compiler-generated memoization to plain hooks
What
The component behind the rate-limit options dialog was rewritten from an auto-generated, memoization-heavy form (produced by a React compiler) into ordinary hooks-based code. This accompanies the new limit-wall-promo option added to the same dialog.
Why
This is an internal code change with no described effect on behavior; it doesn't change what the dialog looks like or does.