Python: Prefer injected Postgres clients over connection settings - #9983

Canceling since a higher priority waiting request for devflow-pr-review-microsoft/agent-framework-9983-gate exists

Canceling since a higher priority waiting request for devflow-pr-review-microsoft/agent-framework-9983-gate exists

On December 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target