Handle BadRequests in agent controller

[rbren]

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Recently switched this to an allowlist, adding one more

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docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:738ad94-nikolaik   --name openhands-app-738ad94   docker.all-hands.dev/all-hands-ai/openhands:738ad94