Update developer portal default theme - #751

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. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

'getAllAPIs' is defined but never used

'logUserAction' is assigned a value but never used

'referenceID' is assigned a value but never used

Do not access Object.prototype method 'hasOwnProperty' from target object

'appList' is assigned a value but never used

'log' is assigned a value but never used

'APIDTO' is assigned a value but never used

'subscriptionPolicyDTO' is assigned a value but never used

'loadLayoutFromAPI' is assigned a value but never used