fix(app-shell): the drill URL spells $empty as filter[F][empty], so a composed 「is empty」 drill no longer opens on a superset on spec 17.6.0 (objectui#11547)

fix(app-shell): the drill URL spells $empty as filter[F][empty], so a composed 「is empty」 drill no longer opens on a superset on spec 17.6.0 (objectui#11547) #9153