Account for AWS-LC older OPENSSL_VERSION number

Modules/_ssl.c

@@ -4390,7 +4390,7 @@ _ssl__SSLContext_set_ecdh_curve(PySSLContext *self, PyObject *name)
                      "unknown elliptic curve name %R", name);
         return NULL;
     }
-#if OPENSSL_VERSION_MAJOR < 3
+#if OPENSSL_VERSION_MAJOR < 3 && !defined(OPENSSL_IS_AWSLC)
     EC_KEY *key = EC_KEY_new_by_curve_name(nid);
     if (key == NULL) {
         _setSSLError(get_state_ctx(self), NULL, 0, __FILE__, __LINE__);