[3.12] gh-131050: skip `test_dh_params` when TLS library lacks FFDHE ciphersuites (GH-131051) (#131875)

gh-131050: skip `test_dh_params` when TLS library lacks FFDHE ciphersuites (GH-131051)
(cherry picked from commit be2d2181e62cd138b0cdf80ebc0dd4058187c52a)

Co-authored-by: Will Childs-Klein <willck93@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>