update build infrastructure for ML-KEM in the FIPS provider

update build infrastructure for ML-KEM in the FIPS provider

Also avoid a file name conflict when adding ML-KEM to the FIPS provider.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Hugo Landau <hlandau@devever.net>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/26338)