test(rabbitmq): declare exchange and queue as durable

[Tranquility2]

Problem

test_docker_run_rabbitmq fails on all 4 parametrized cases against rabbitmq:latest (currently 4.x):

pika.exceptions.ConnectionClosedByBroker: (541, 'INTERNAL_ERROR -
Feature `transient_nonexcl_queues` is deprecated.
By default, this feature is not permitted anymore.')

The earlier IncompatibleProtocolError / StreamLostError lines in CI logs were a downstream symptom of the broker dropping the connection after the rejected queue declaration.

Fix

Declare both the exchange and the queue as durable=True. RabbitMQ 4.x disallows transient non-exclusive queues by default; durable is the supported replacement and is appropriate for an integration test that publishes/consumes a single message.

Verification

uv run pytest -q modules/rabbitmq/tests/test_rabbitmq.py — 4 passed locally against rabbitmq:latest.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.29%. Comparing base (be4c857) to head (15cf24b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1037   +/-   ##
=======================================
  Coverage   83.29%   83.29%           
=======================================
  Files          16       16           
  Lines        1754     1754           
  Branches      193      193           
=======================================
  Hits         1461     1461           
  Misses        236      236           
  Partials       57       57           

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[alexanderankin]

can you guys coordinate? @CarliJoy? - I'm trying my best not to merge any PRs until after the src layout migration which i greenlit because the only other long standing PR which is strongly desired is the reusable containers one.