Send kafka notification messages in batches when queue_dir is enabled (#18164)

Fixes #18124

internal/store/queuestore.go

@@ -167,6 +167,21 @@ func (store *QueueStore[_]) Del(key string) error {
 	return store.del(key)
 }
 
+// DelList - Deletes a list of entries from the store.
+// Returns an error even if one key fails to be deleted.
+func (store *QueueStore[_]) DelList(keys []string) error {
+	store.Lock()
+	defer store.Unlock()
+
+	for _, key := range keys {
+		if err := store.del(key); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 // Len returns the entry count.
 func (store *QueueStore[_]) Len() int {
 	store.RLock()