Optimize all-day event management and removal

Improves event removal process with enhanced fade-out and logging
Adds data-removing attribute to exclude events during height calculations
Prevents unnecessary removal of all-day events during drag operations

Enhances event rendering and management for better performance and user experience

src/renderers/EventRenderer.ts

@@ -172,8 +172,11 @@ export class DateEventRenderer implements IEventRenderer {
       return;
     }
 
-    // Fade out original
-    this.fadeOutAndRemove(originalElement);
+    // Only fade out and remove if it's a swp-event (not swp-allday-event)
+    // AllDayManager handles removal of swp-allday-event elements
+    if (originalElement.tagName === 'SWP-EVENT') {
+      this.fadeOutAndRemove(originalElement);
+    }
 
     // Remove clone prefix and normalize clone to be a regular event
     const cloneId = draggedClone.dataset.eventId;