Rasa: 3.3.7 Release

• #12144: Add a self-reference of the synonym in the EntitySynonymMapper to handle entities extracted in a casing different to synonym case. (For example if a synonym austria is added, entities extracted with any alternate casing of the synonym will also be mapped to austria). It addresses ATO-616

Bugfixes

• #12187: Fix issue with failures while publishing events to RabbitMQ after a RabbitMQ restart. The fix consists of pinning aio-pika dependency to 8.2.3, since this issue was introduced in aio-pika v8.2.4.
• #12192: Fix 2 issues detected with the HTTP API:
  • The GET /conversations/{conversation_id}/tracker endpoint was not returning the tracker with all sessions when include_events query parameter was set to ALL. The fix constituted in using TrackerStore.retrieve_full_tracker method instead of TrackerStore.retrieve method in the function handling the GET /conversations/{conversation_id}/tracker endpoint. Implemented or updated this method across all tracker store subclasses.
  • The GET /conversations/{conversation_id}/story endpoint was not returning all the stories for all sessions when all_sessions query parameter was set to true. The fix constituted in using all events of the tracker to be converted in stories instead of only the applied_events.