Restore 1.16.5 behaviour of InventoryDragEvent being called even when a single item is 'dragged' to its own slot

Ideally this would now be an InventoryClickEvent instead, but that is not so easy with the current structure.
See https://www.spigotmc.org/threads/510208/page-9#post-4185501 for further info.

By: md_5 <git@md-5.net>

paper-server/nms-patches/net/minecraft/world/inventory/Container.patch

@@ -74,6 +74,15 @@
      public void b(ICrafting icrafting) {
          this.containerListeners.remove(icrafting);
      }
+@@ -338,7 +382,7 @@
+                 }
+             } else if (this.quickcraftStatus == 2) {
+                 if (!this.quickcraftSlots.isEmpty()) {
+-                    if (this.quickcraftSlots.size() == 1) {
++                    if (false && this.quickcraftSlots.size() == 1) { // CraftBukkit - treat everything as a drag since we are unable to easily call InventoryClickEvent instead
+                         k = ((Slot) this.quickcraftSlots.iterator().next()).index;
+                         this.e();
+                         this.b(k, this.quickcraftType, InventoryClickType.PICKUP, entityhuman);
 @@ -349,6 +393,7 @@
                      l = this.getCarried().getCount();
                      Iterator iterator = this.quickcraftSlots.iterator();