Allow compiler warnings in E2E builds - #233

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

struct `IvrExecHook` is never constructed

constant `RESULT_CT` is never used

struct `IvrExecResultPayload` is never constructed

multiple fields are never read