Add a test for multi-threaded OBJ_create

Add a test for multi-threaded OBJ_create

After a successful OBJ_create the returned NID should
be the same NID that is returned from OBJ_ln2nid and
should not change any more, but after an unsuccessful
OBJ_create, another thread must have created the object,
therefore OBJ_ln2nid should not return NID_undef in that
case.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28582)

(cherry picked from commit 5909d0d3fc9b99b7b9f0577d29515a72fa94bfa0)