crypto: fix regression in RSA-PSS keygen
This regression was introduced in https://github.com/nodejs/node/pull/35093. Node.js incorrectly adds RSASSA-PSS-params
to RSA-PSS keys even when no parameters were specified by the user.
Fixes: https://github.com/nodejs/node/issues/39936 Refs: https://github.com/nodejs/node/pull/35093