ci: actually automate updating rule version metadata, for real this time

[dyc3]

Summary

Follow up to #7429. The job will now stash the changes to get around the git reset and reapply them later. We can't do a commit because the changeset cli resets to the branch to a specific commit, not to the current HEAD. https://github.com/changesets/action/blob/04d574e831923498156e0b2b93152878063203a3/src/git.ts#L100

Test Plan

We'll see if it works when it lands. I don't know if its actually required to have a new changeset to actually trigger the workflow to run.

Docs

[changeset-bot]

⚠️ No Changeset found

Latest commit: adc1b95

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

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[coderabbitai]

Walkthrough

Removed .changeset/fluffy-jeans-cheat.md (placeholder-only file). Added a "Stash changes" step to .github/workflows/release.yml that runs git stash push -u -m __automated-changes after scripts/update-next-version.sh and before the Create Release Pull Request step. Updated package.json version script to attempt to pop that stash if present using a guarded command so missing stash is non-fatal.

Suggested labels

L-JavaScript, L-JSON

Suggested reviewers

• ematipico

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✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-version-meta-3

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[coderabbitai]

Actionable comments posted: 2

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• .changeset/fluffy-jeans-cheat.md

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[chansuke]

lgtm