Python: fix(python): project the per-call effective tool set on agent-hooks pre_model_call - #7747

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: azure/login@a457da9ea143d694b1b9c7c869ebb04ebe844ef5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/