The ProfileTabEditModal reset form state inside a handleOpenChange
callback, but Radix Dialog does not fire onOpenChange when opened
programmatically via the `open` prop. This meant that when a parent
component set `open={true}` (e.g. after clicking 'Add custom tab'),
the reset logic never ran and the form kept stale values from the
last edit session.
Replace the handleOpenChange reset with a useEffect that triggers
whenever `open` transitions to true, ensuring the form always
initializes from the current `tab` prop (or clean defaults for a
new tab).
Closes#196
Mary Kate Fain
497d6979d0