Discrepancy in Count Query Results Between Grafana-Plugins and IoTDB CLI

### Search before asking

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

### Version

- IoTDB 1.2.2 Standalone
- IoTDB Grafana Plugin 1.0 (Grafana interface)
- Grafana 10.2.2

### Describe the bug and provide the minimal reproduce step

### Problem Description
When executing a `SELECT COUNT(DISTINCT())` query, there's an observed inconsistency in the returned count value between Grafana-Plugins and the IoTDB CLI. While the IoTDB CLI returns the expected and accurate count, the Grafana-Plugins display an incorrect count number.

### IoTDB CLI Result (Correct Count)

### Grafana Explore Query (Incorrect Count)

### Steps to Reproduce
1. Execute the `SELECT COUNT(DISTINCT())` query using IoTDB CLI.
2. Execute the same query using Grafana-Plugins within the Grafana Explore interface.
3. Compare the returned count values.

### What did you expect to see?

### Expected Behavior
The count value returned by Grafana-Plugins should align with the count value retrieved using IoTDB CLI for the same `COUNT(DISTINCT())` query.

### What did you see instead?

### Actual Behavior
During the execution of the SELECT COUNT(DISTINCT()) query using Grafana-Plugins, the returned count value deviates from the expected count. Specifically, the count value displayed in Grafana-Plugins is 0, whereas the accurate count obtained through IoTDB CLI is 2.

### Anything else?

The blurried part of the path are just for obscure sensitive data.

### Are you willing to submit a PR?

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

まず、記載されたバージョンを使い、報告されている IoTDB CLI と Grafana Explore の手順で不一致を再現し、COUNT(DISTINCT()) の結果を比較します。Grafana-Plugins のエントリポイントがクエリレスポンスをどのように処理するかを追跡します。Grafana が CLI と同じカウント、つまり 0 ではなく 2 を表示した時点で issue は完了です。

索引モデルが issue の本文から書いたものです。