The grid now also displays training_schedules that have no matching
space_reservation (orphan schedules). These appear on the grid so users
can see and cancel them. The cancelReservation method now accepts both
reservationId and scheduleId to handle both cases.

Also added cancel button column to the FacilityShow reservations tab.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>