endecode_test.c: Avoid running the SM2 tests with 3.0.0 FIPS provider

Fixes #25326

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25327)

(cherry picked from commit 0b97a550)