With the tracker-mapping worker no longer materializing org third
parties, add the deliberate action that does: ThirdPartyService.Import
FromCommon seeds an org ThirdParty from a CommonThirdParty catalog entry
or returns the one the organization already imported, making it
idempotent on the (organization_id, common_third_party_id) pair.
On both the create and reuse paths it backfills tracker_patterns.third_
party_id for the organization's unlinked patterns whose catalog row
resolves to the same common third party, via the new TrackerPatterns.Link
ThirdPartyByCommonThirdPartyID. Patterns that previously surfaced the
catalog entry then surface the managed org vendor in the trackers UI and
the tracker-policy document. Only unlinked patterns are touched, so the
backfill is idempotent and picks up newly detected patterns on re-import.
End-to-end coverage (idempotency and pattern backfill) lands with the
GraphQL mutation in a following commit.
Signed-off-by: Émile Ré <emile@probo.com>
c25e7c6c40