Default event type for event core archives from external sources

[charvolant]

For an example, a DwCA taken from an IPT. These may not have an eventType structure and may, anyway be a grab-bag of undifferentiated events.

Currently an instance of this is Dredge, trawl and bycatch records from the northern section of the Great Barrier Reef, Australia (1991-1996)](https://events-test.ala.org.au/?datasetKey=dr18393)

First step, see if the collectory default values can be used.

End goal is for Pipelines to add default eventType and populate the Structure used for the UI.

[qifeng-bai]

After fixed the graphQl error handling, the 'Dredge' record also can be displayed