Add ignore scripts to pnpm i in pypi action (#5316)
* add json generation to prepare
* add changeset
* remove pnpm prepare
* add changeset
* bring back prepare, add ignore scripts
* delete changeset
* add to right commadn
* add frozen lockfile to gh_action_pypi
* remove unused gh_action_pypi script
* remove unused scripts
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
