Refactor FIPS integrity check to use KAT framework

Refactor FIPS integrity check to use KAT framework

The FIPS module integrity check (HMAC-SHA256) is refactored to use the
generic Known Answer Test (KAT) framework instead of a standalone
function.

- Remove `integrity_self_test` and use `ST_ID_MAC_HMAC` with
  `SELF_TEST_kats_single`.
- Add `self_test_mac` to `self_test_kats.c` to support MAC tests.
- Move HMAC test data to `self_test_data.c`.
- Rename the self-test type from "KAT_Integrity" to "KAT_Mac".
- Ensure on-demand tests reset state so they can be repeated.

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/29222)