[Bug] ReverseMarkdown 转换出的 Markdown 存在错误；MarkdownTextBlock 存在内存问题

[natsurainko]

Describe the bug

ReverseMarkdown 错误的 Markdown

错误：

# [![Supplementaries Discord](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/discord.svg?raw=true)](https://discord.gg/qdKRTDf8Cv) [![Support me on Patreon](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/patreon.svg?raw=true)](https://patreon.com/mehvahdjukaar) [!\[Supplementaries Twitter\](https://badges.penpow.dev/badges/social/twitter-plural/cozy.svg)](https://www.twitter.com/Supplementariez) [!\[Youtube Channel\](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/youtube.svg?raw=true)](https://www.youtube.com/channel/UCOaLLgwzOdbH6rCI7izCptw) 

正确：

# [![Supplementaries Discord](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/discord.svg?raw=true)](https://discord.gg/qdKRTDf8Cv) [![Support me on Patreon](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/patreon.svg?raw=true)](https://patreon.com/mehvahdjukaar) [![Supplementaries Twitter](https://badges.penpow.dev/badges/social/twitter-plural/cozy.svg)](https://www.twitter.com/Supplementariez) [![Youtube Channel](https://github.com/MehVahdJukaar/dynamic_badges/blob/master/youtube.svg?raw=true)](https://www.youtube.com/channel/UCOaLLgwzOdbH6rCI7izCptw) 

MarkdownTextBlock 内存问题

Steps to reproduce the bug

在资源下载中打开名为 Polytone 的 CurseForge 模组的详细描述界面

Expected behavior

No response

Environment

No response

Attachment

No response