feat(shorts): support shorts feed and fix shorts content `<br>`

#2244Pull Requestmarkbang 创建于 2025-08-24

support shorts feed ![feed](https://github.com/user-attachments/assets/147451f8-0fea-4af3-bc9c-077ce94a0954) fix content `<br>` ![br compare](https://github.com/user-attachments/assets/53977b30-7e4f-48eb-9681-dc35a910aa03)

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