chore: ux improve, allow re-upload when file upload failed

[flasco]

by the way, why not use FE ui component dependency like antd or arco-design? it's very troublesome work with handwritten, hindered my enthusiasm……

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另外不用 ui 库吗，比如 antd / arco-design 之类的，手搓组件也太累了，本来想加一下 tooltip 的，但是发现没用库，就没继续写啦

[flasco]

@ovnrain 看看合一下？

[ovnrain]

待我闲暇时研读一下