Update early data test for an even later arrival of CF

Commit 9b5c865d

 introduced a synthetic delay between arrival of EoED and
CF. We actually want to delay the arrival of CF even further to demonstrate
that we can write early data even when "in init".

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3091)