Add `Retry` button when creating a mirror-repo fails (#26228)

Add `Retry` button when creating a mirror-repo fails (#26228)

fixed #26156
* Added a retry button in the frontend (only displayed when the status
is abnormal)
* After clicking Retry, the backend adds the task back to the task queue

![7UJDNM671RI})EA8~~XPL39](https://github.com/go-gitea/gitea/assets/3371163/e088fd63-5dcc-4bc6-8849-7db3086511b7)

![T83F1WL9)VGHR@MB956$VT9](https://github.com/go-gitea/gitea/assets/3371163/744425bb-dde1-4315-be2e-5c99ac3a44d4)

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>