[Bug Report] mermaid 渲染问题

[123GaoLin]

Prerequisites

• There isn't an existing issue that reports the same bug to avoid duplicates.

• The provided information offers a minimal reproducible example of the bug, (Why create a Minimal).

• For Q&A, please open a GitHub Discussion instead.

Version

v0.10.3

Reproduction Link

No response

Describe the Bug

markdown 在初始隐藏场景下。（比如被一个默认折叠的折叠块嵌套）

1. mermaid 渲染异常，展示为代码块或空白 svg
2. 监听首次展示 markdown 时，使用refreshPreviewer方法也没无效

System Information

Contributing

None