Revert "chore(deps): update dependency docusaurus-plugin-llms to ^0.4.0 (#5637)"

[thomhurst]

Reverts #5637.

Summary

• Reverts the bump of docusaurus-plugin-llms from the prior version to ^0.4.0 in docs/package.json and docs/yarn.lock.

Test plan

• docs build succeeds on the reverted version

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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[claude]

Code Review

This is a clean, focused revert of #5637 — downgrading docusaurus-plugin-llms from ^0.4.0 back to ^0.3.1.

What looks good

• The revert is surgical: only docs/package.json and docs/yarn.lock are touched, exactly matching the original bump's footprint.
• The yarn.lock entry is properly updated to the resolved hash and integrity for 0.3.1, so the lockfile is consistent.

One thing to note

The PR description doesn't explain why 0.4.0 needed reverting (build failure? breaking API change? incompatibility with the current Docusaurus version?). Adding a brief note in the body or a follow-up comment would help future readers understand whether it's safe to retry the upgrade later, and under what conditions.

The test plan checkbox (docs build succeeds on the reverted version) is still unchecked — worth confirming that before merging so there's confidence the revert actually resolves the issue.

Otherwise, LGTM.