[9.18] Handle FORMERR on unknown EDNS option that are echoed
requested to merge 4049-detect-formerr-with-an-echoed-dns-cookie-client-cookie-and-retry-without-dns-cookie-9.18 into bind-9.18
If the resolver received a FORMERR response to a request with an DNS COOKIE option present that echoes the option back, resend the request without an DNS COOKIE option present.
Backport of !7888 (merged)
Closes #4049 (closed)