Fix duplicate submissions and EditArea null pointer error#902

PythonSmall-Q with Copilot wants to merge 6 commits into

submit-patchXMOJ-Script-dev/XMOJ-Script:submit-patchfrom

copilot/sub-pr-901XMOJ-Script-dev/XMOJ-Script:copilot/sub-pr-901Copy head branch name to clipboard