fix calendar flickering on move for non-aligned entries

this is a trade-off where for non grid aligned entries, the cursor position is a bit off, but data and visual are stil in sync. otherwise fc overrides height on drag, causing flickers.

Author: Onatcer

resources/js/packages/ui/src/FullCalendar/TimeEntryCalendar.vue

@@ -368,7 +368,7 @@ const calendarOptions = computed(() => {
         slotDuration: formatDuration(s.slotMinutes * 60),
         slotLabelInterval: '01:00:00',
         slotLabelFormat: getSlotLabelFormat(),
-        snapDuration: '00:01:00',
+        snapDuration: formatDuration(s.snapMinutes * 60),
         firstDay: getFirstDay(),
         allDaySlot: false,
         nowIndicator: true,