[krbdev.mit.edu #9180] pkinit preauth plugin create_signature calls EVP_PKEY_size() instead of EVP_PKEY_get_size()

<URL: http://kerborg-prod-app-1.mit.edu/rt/Ticket/Display.html?id=9180 >

There is indeed a missed rename there, and another one in encode_spki()
for EVP_PKEY_base_id() -> EVP_PKEY_get_base_id().  However, as far as I can
tell OpenSSL 3.x never removed its compatibility macros for EVP_PKEY_size()
and EVP_PKEY_base_id().  In 3.2.5's <openssl/evp.h> I see:

# define EVP_PKEY_size EVP_PKEY_get_size

at line 1323.  So I don't understand why there was a build failure.