[dataimport] add missing import 'eschema_eid'
grafted from e3ec46b5c710067a0cecca53cc593a0dd4bd927e (3.22)
related to #9177565
ifnotrql('CWConstraintType X WHERE X name "RQLUniqueConstraint"',ask_confirm=False):rql('INSERT CWConstraintType X: X name "RQLUniqueConstraint"',ask_confirm=False)