The other algorithm, MD4 is unsafe and remains in the legacy provider.
References:OMC decision: <https://www.openssl.org/blog/blog/2022/10/18/rmd160-and-the-legacy-provider/>
ChangeLog: <https://www.openssl.org/news/cl30.txt> -richy.
IMO, this bug can be closed. There's been the decision by the OpenSSL
Managment Board to reinstate RIPEMD160 (and only that) to the default
providers in release 3.0.7.
