Enable large Work to be serialized by default

When processing a large Work, we can hit the default Kafka message size limit (1MB).

This happens for example when importing a Nuxeo distribution on a Nuxeo server running the Platform Explorer package.
Yet, we don't want to increase the kafka message size limit.

As explain in NXP-26691, Nuxeo has an overflow mechanism to process big messages without changing the default kafka message size limit by storing the messages in a transient store and only transmit their key to find them back.
However, this mechanism is not enabled by default. To turn it on, we need to set nuxeo.stream.work.computation.filter.enabled to true.