[Feature request] Make MQTT Service's Anonymous Access Configurable

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/iotdb/issues) and found nothing similar.

### Motivation

I noticed in this PR: https://github.com/apache/iotdb/pull/1447 that anonymous access (`ALLOW_ANONYMOUS_PROPERTY_NAME`) to the MQTT service was added. Is there any plan to make it configurable?

My use case is that I have an MQTT client to which I do not have access to its source code, and it sends data to the MQTT broker using a specific username. I would like to make the MQTT service anonymously accessible.

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我注意到在这个 PR：https://github.com/apache/iotdb/pull/1447 中，已添加了对 MQTT 服务的匿名访问（`ALLOW_ANONYMOUS_PROPERTY_NAME`）。是否有计划使其可配置？

我的使用场景是，我有一个 MQTT 客户端，但无法访问其源代码，该客户端使用特定的用户名将数据发送到 MQTT 经纪服务器。我希望使 MQTT 服务可以匿名访问。

### Solution

_No response_

### Alternatives

_No response_

### Are you willing to submit a PR?

- [x] I'm willing to submit a PR!

Inizia tracciando ALLOW_ANONYMOUS_PROPERTY_NAME attraverso la configurazione del servizio MQTT e confronta il comportamento introdotto in PR 1447. La modifica è completata quando l'accesso anonimo può essere controllato tramite la configurazione, mentre il comportamento esistente di autenticazione MQTT rimane corretto; il payload non indica alcun test o file specifico da eseguire.

Scritto dal modello di indicizzazione a partire dal testo della issue.