Reimplement invitations

Signed-off-by: Émile Ré <emile@getprobo.com>

pkg/iam/saml/service.go

@@ -352,20 +352,6 @@ func (s *Service) HandleAssertion(
 				if err != nil {
 					return fmt.Errorf("cannot insert membership: %w", err)
 				}
-
-				// Expire all pending invitations for email in organization
-				invitations := &coredata.Invitations{}
-				onlyPending := coredata.NewInvitationFilter([]coredata.InvitationStatus{coredata.InvitationStatusPending})
-				if err := invitations.ExpireByEmailAndOrganization(
-					ctx,
-					tx,
-					coredata.NewScopeFromObjectID(config.OrganizationID),
-					email,
-					config.OrganizationID,
-					onlyPending,
-				); err != nil {
-					return fmt.Errorf("cannot expire pending invitations by email: %w", err)
-				}
 			}
 
 			if profile.Source != coredata.ProfileSourceSCIM {