closeClaim() was clearing chatbotAutoSubmitSiteKey synchronously right
after the selenium job kicked off, before the job's async completion
handler could check it. This was masked for all but the last claim in
the batch because closeClaim() also navigated away (unmounting the
page) whenever more claims were queued. On the last claim the page
stayed mounted, so the completion handler read a stale cleared value
and let the PDF preview popup through. Track the site key in a ref
that survives closeClaim() and is cleared only after the job's own
completion handler consumes it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>