在一个 Memo中 有多个 mermaid 块，可能导致生成的svg ID是一样的，导致渲染不对。

[QiTianQingShui]

Describe the bug

比如： f:

 flowchart LR
  foo-->bar
  bar-->baz

s:

 flowchart LR
  a-->b

正常情况下：

多次切换或刷新，不定时出现svg ID一致：

Steps to reproduce

1. 在一个 Memo中添加多个 mermaid
2. 通过刷新，功能切换
3. 不时出现 渲染出的svg ID是一样的，导致样式错误。

The version of Memos you're using

v0.20.0

Screenshots or additional context

[Issues-translate-bot]

Issue is not in English. It has been translated automatically.

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Title: If there are multiple mermaid blocks in a Memo, the generated svg ID may be the same, resulting in incorrect rendering.

[boojack]

Sorry, I cannot reproduce in the latest version. Maybe needs more context.