Sql Queue Provider Conversation endpoint leak

**Describe the bug**
After a queue item is processed, the conversation endpoint status remains in CONVERSING state and the record remains in sys.conversation_endpoints in perpetuity.

**To Reproduce**
Execute any workflow using Sql Queue Provider.

**Expected behavior**
After the queue item is processed, the conversation endpoint status is changed to CLOSED and is removed from sys.conversation_endpoints after lifetime expiration.

**Additional context**
QueueWork.sql and DequeueWork.sql are not ending the conversation