fix(VCalendar): missing events under certain circumstances (#13763)

fixes #13720

Author: jacekkarczmarczyk

packages/vuetify/src/components/VCalendar/mixins/calendar-with-events.ts

@@ -172,23 +172,25 @@ export default CalendarBase.extend({
 
         const parentBounds = parent.getBoundingClientRect()
         const last = events.length - 1
-        let hide = false
+        const eventsSorted = events.map(event => ({
+          event,
+          bottom: event.getBoundingClientRect().bottom,
+        })).sort((a, b) => a.bottom - b.bottom)
         let hidden = 0
 
         for (let i = 0; i <= last; i++) {
-          if (!hide) {
-            const eventBounds = events[i].getBoundingClientRect()
-            hide = i === last
-              ? (eventBounds.bottom > parentBounds.bottom)
-              : (eventBounds.bottom + eventHeight > parentBounds.bottom)
-          }
+          const bottom = eventsSorted[i].bottom
+          const hide = i === last
+            ? (bottom > parentBounds.bottom)
+            : (bottom + eventHeight > parentBounds.bottom)
+
           if (hide) {
-            events[i].style.display = 'none'
+            eventsSorted[i].event.style.display = 'none'
             hidden++
           }
         }
 
-        if (hide) {
+        if (hidden) {
           more.style.display = ''
           more.innerHTML = this.$vuetify.lang.t(this.eventMoreText, hidden)
         } else {