fix: Fix for NullReferenceException during client Shutdown

[samlucas-unity]

Upon shutdown the CustomMessagingManager is nulled before ConnectionManager.Shutdown(); is called. This can cause a crash if there are unprocessed messages left in the queue since they can try and access CustomMessagingManager.

fix: Fixed issue with shutdown order causing a crash when unprocessed messages are still in the queue. [MTT-8367]

Changelog

• Fixed: If you update multiple packages, create a new section with a new header for the other package.

Testing and Documentation

• Includes integration tests.
• No documentation changes or additions were necessary.

[unity-cla-assistant]

All committers have signed the CLA.