Copy a multi-level nested list, paste it into the editor, and the list level becomes confused

[codeInCat]

Describe the bug

Reproduction

https://github.surmon.me/vue-quill-editor
can be reproduced in editor website demo;

System Info

System:
    OS: macOS 12.4
    CPU: (4) x64 Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
    Memory: 90.45 MB / 8.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 12.13.1 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 6.14.15 - /usr/local/bin/npm

Used Package Manager

npm

Validations

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• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.