RabbitMQ: Malformed UTF-8 in shortstr properties permanently disables RPC consumers

Summary A single AMQP message with malformed UTF-8 in a shortstr property for example correlation-id can permanently disable a Java client RPC consumer. The client decodes malformed bytes into U+FFFD replacement characters. Each of those re-encodes to 3 bytes, so a 255-byte property becomes 765...