crypto: fix EVPKeyCtxPointer::publicCheck()

Commit 206ebeb added an additional call
to EVP_PKEY_public_check and an unconditional return from publicCheck().
This prevents the control flow from reaching the original call to either
EVP_PKEY_public_check or EVP_PKEY_public_check_quick.

This change restores the previous behavior, which calls
EVP_PKEY_public_check_quick instead, if possible.

Refs: #56812
PR-URL: #59471
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: tniessen

deps/ncrypto/ncrypto.cc

@@ -3643,7 +3643,6 @@ EVPKeyPointer EVPKeyCtxPointer::paramgen() const {
 bool EVPKeyCtxPointer::publicCheck() const {
   if (!ctx_) return false;
 #ifndef OPENSSL_IS_BORINGSSL
-  return EVP_PKEY_public_check(ctx_.get()) == 1;
 #if OPENSSL_VERSION_MAJOR >= 3
   return EVP_PKEY_public_check_quick(ctx_.get()) == 1;
 #else