Tyrone Yeh 9bc5552c11
Improve attachment upload methods (#30513)
* Use dropzone to handle file uploading for all cases, including pasting
and dragging
* Merge duplicate code, use consistent behavior for link generating

Close #20130

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Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2024-06-27 09:31:49 +00:00
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