test: add coverage for governance and timelock authorization, initialization, and boundary paths (closes #1421) - #1481

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4, pnpm/action-setup@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

img elements must have an alt prop, either with meaningful text, or an empty string for decorative images

React Hook useCallback has an unnecessary dependency: 'currentUserId'. Either exclude it or remove the dependency array