Add a test for OSSL_ERR_STATE_save_to_mark()

Add a test for OSSL_ERR_STATE_save_to_mark()

Add a test for the recently added function OSSL_ERR_STATE_save_to_mark().
We can just modify the existing test_save_restore() to add this in.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22368)