Add functional tests for missing origin snapshots
Test the case of an origin without any visits and hence no snapshots
Testing the case https://sentry.softwareheritage.org/organizations/swh/issues/107918/?project=27
Edited by Jayesh
Staging instance, all changes can be removed at any time
Test the case of an origin without any visits and hence no snapshots
Testing the case https://sentry.softwareheritage.org/organizations/swh/issues/107918/?project=27