Fallback activation after empty-response retries re-entered the outer loop
without refunding the provisional call, so a provider hop consumed an
iteration. Refund via _refund_api_call and carry the count back through
EmptyResponseVerdict -> FinalResponseVerdict -> s.api_call_count.
Salvaged from #88867.
Co-authored-by: RelaxJonh <92573950+RelaxJonh@users.noreply.github.com>
