allDayEvents property
The all-day events (#48), packed into stacked lanes for the all-day band.
Built from entries whose PlannerTime.allDay is set; those are kept out of
events (the hour-positioned grid) entirely. Empty — so the band is
omitted and allDayBandHeight is zero — when none are all-day or the band
is disabled (PlannerConfig.showAllDayBand is false, the default).
Implementation
final List<AllDayEvent<T>> allDayEvents = [];