Fix downlevel test failures

Author: rzikm

src/core/connection.c

@@ -1443,11 +1443,11 @@ QuicConnTryClose(
     if (!ClosedRemotely) {
         if ((Flags & QUIC_CLOSE_APPLICATION) &&
             (Connection->Crypto.TlsState.WriteKey < QUIC_PACKET_KEY_1_RTT ||
-            (QuicConnIsClient(Connection) && !Connection->State.HandshakeConfirmed))) {
+            (QuicConnIsClient(Connection) && !Connection->Crypto.TlsState.HandshakeComplete))) {
             //
             // Application close can only happen if we are using 1-RTT keys.
             // In case of Clients, we may have 1-RTT write keys earlier but
-            // server may not process 1-RTT packets until the handshake is confirmed.
+            // server may not process 1-RTT packets until the handshake is complete.
             //
             // Send "user_canceled" TLS error code as a connection close instead.
             // Overwrite all application provided parameters.