feat: add React multilingual intranet switcher sample - #6484

Error: failed to remove labels: Sample validation: Success

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions-ecosystem/action-add-labels@v1, actions-ecosystem/action-remove-labels@v1, actions/checkout@v3, pnp/action-pr-validator@v1.1.2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/