Disable sending min_ack_delay in transport parameters on the client side. It is a no-op for google service and not flag protected. Apparently, non-Google servers might react to this parameter and therefore it should be sent by default until it is fully tested. PiperOrigin-RevId: 325226780 Change-Id: Id35c9862a1afcf8c94dce5ec8c2bf4617977890f