Create validation for only one tomogram to be is_visualization_default

[manasaV3]

Motivation

This is_visualization_default flag for a tomogram can be set to true for multiple tomograms in a run. This changes the meaning of the flag, from being the flag to identify the tomogram whose key photo and neuroglancer config are to be used, to a flag that is unique for a run, given a deposition.

Currently, there are no validations to ensure if there is more than one tomogram having is_visualization_default is true.
In the case where a deposition adds tomograms to a run, it could potentially have a tomogram marked as is_visualization_default is true, we can run into a case with multiple tomograms having the is_visualization default set to true.

This could potentially create a non-deterministic experiences when getting the first tomogram with is_visualization_default=true.

Definition of Done

There is only one tomogram with is_visualization_default=true for every run.

Tasks

• Add tests in validation which checks for this criteria.
• Fix any configs and reingest the tomogram metadata

Notes

The frontend should currently be handling for this with a sort on is_author_submitted, to prioritize the author submitted tomogram.

[manasaV3]

Blocked by: #1331