[MM-44336] Add timestamp parameter to test data slash commands (#21400)

store/sqlstore/team_store.go

@@ -876,7 +876,7 @@ func (s SqlTeamStore) UpdateMultipleMembers(members []*model.TeamMember) ([]*mod
 		}
 
 		if _, err := s.GetMasterX().NamedExec(`UPDATE TeamMembers
-				SET Roles=:Roles, DeleteAt=:DeleteAt, SchemeGuest=:SchemeGuest,
+				SET Roles=:Roles, DeleteAt=:DeleteAt, CreateAt=:CreateAt, SchemeGuest=:SchemeGuest,
 					SchemeUser=:SchemeUser, SchemeAdmin=:SchemeAdmin
 				WHERE TeamId=:TeamId AND UserId=:UserId`, newTeamMember); err != nil {
 			return nil, errors.Wrap(err, "failed to update TeamMember")