该问题是否已经被报告过了？ Is there an existing issue for this?

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  I have searched the existing issues

描述问题 Describe the problem

下面是一个 Mermaid 块内容

```mermaid
sequenceDiagram
    Alice->>John: Hello John, how are you?
    loop Every minute
        John-->>Alice: Great!
    end
```

数据库中该块 markdown 字段内容

```mermaid
sequenceDiagram
    Alice->>John: Hello John, how are you?
    loop Every minute
        John-->>Alice: Great!
    end
```

> 字符被转义

期待的结果 Expected result

Mermaid 块的内容在数据库 blocks 表 markdown 字段中不被转义

截屏或者录屏演示 Screenshot or screen recording presentation

No response

版本环境 Version environment

- Version: 2.4.5
- Operating System: 
- Browser (if used):

日志文件 Log file

无有效信息输出

更多信息 More information

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