Use Dagger to @Inject DnsQueue everywhere that is feasible

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=136062053

java/google/registry/dns/DnsQueue.java

@@ -145,8 +145,13 @@ public class DnsQueue {
     }
   }
 
-  // TODO(b/19483428): Remove me when flows package is ported to Dagger.
-  /** Creates a new instance. */
+  /**
+   * Creates a new instance.
+   *
+   * <p><b>Note:</b> Prefer <code>@Inject</code>ing DnsQueue instances instead. You should only use
+   * this helper method in situations for which injection does not work, e.g. inside mapper or
+   * reducer classes in mapreduces that need to be Serializable.
+   */
   public static DnsQueue create() {
     DnsQueue result = new DnsQueue();
     result.writeLockTimeout = Duration.standardSeconds(120);