Adapt origin_get_latest_visit_status according to latest api change
Test Plan
tox (failing until swh.storage > 0.21 [1], swh.loader.core > 0.15 [2], swh.loader.git > 0.5 [3] are released)
Migrated from D4988 (view on Phabricator)
Staging instance, all changes can be removed at any time
tox (failing until swh.storage > 0.21 [1], swh.loader.core > 0.15 [2], swh.loader.git > 0.5 [3] are released)
Migrated from D4988 (view on Phabricator)