Batch operations in the issues list (labels, milestones, projects,
assignees, etc.) could fail silently because `updateIssuesMeta` caught
and suppressed fetch errors internally. The caller would then proceed to
reload the page, clearing all selected issue checkboxes and giving the
impression that the operation had succeeded.
- Remove updateIssuesMeta and use our "fetch-action" framework to handle errors and page reloading
- Refactor backend code to use ctx.JSONError
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Signed-off-by: Sudhanshu Singh <sudhanshuwriterblc@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
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