chore: Regenerate package-lock.json files for Next.js 15.5.7

[Copilot]

Description

PR #538 updated package.json files to Next.js 15.5.7 but did not regenerate package-lock.json files, leaving installations vulnerable to GHSA-9qr9-h5gf-34mp.

Changed:

• Regenerated 6 existing package-lock.json files (were locked at 15.4.7 or 15.5.2)
• Updated toolbar example package.json version specifier (^15.5 → ^15.5.7) and regenerated its lockfile (was at 15.5.5)

Files updated:

• examples/next/*/example-app/package-lock.json (4 files)
• packages/toolbar/examples/next/example-app/package.json + package-lock.json
• plugins/hwp-previews/examples/hwp-preview-rest/example-app/package-lock.json
• plugins/wpgraphql-webhooks/examples/webhooks-isr/example-app/package-lock.json

All tracked lockfiles now reference Next.js 15.5.7. Security audits confirm 0 vulnerabilities.

Related Issue

Completes work from #538

Dependant PRs

None

Type of Change

• ✅ Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactoring (no functional changes)
• 📄 Example update (no functional changes)
• 📝 Documentation update
• 🔍 Performance improvement
• 🧪 Test update

How Has This Been Tested?

• Verified all tracked package-lock.json files reference Next.js 15.5.7
• Ran npm audit on updated examples (0 vulnerabilities)
• CodeQL scan confirmed no security issues

Screenshots

N/A

Checklist

• I have read the CONTRIBUTING document
• My code follows the project's coding standards
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• Any dependent changes have been highlighted, merged or published

Original prompt

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This section details on the original issue you should resolve

<issue_title>chore: Update Next.js for examples</issue_title>
<issue_description># Overview

Update all version of Next.js under examples to the latest version.

The latest version currently is 15.5.7 - GHSA-9qr9-h5gf-34mp</issue_description>

<agent_instructions>PR was created #538 which updated the package.json file but never updated the package-lock.json file so the security issues still exist.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes chore: Update Next.js for examples #537

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 673bcf2

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.

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[github-actions]

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