Dispatch appropriate action when an operation can be processed

https://linear.app/comm/issue/ENG-9189/introduce-additional-operation-queues

Depends on D13364

Tested the whole stack at once:

1. Created an operation with a reaction that was received before an operation creating the message
2. Created an operation with an edit that was received before an operation creating the message
3. Created an operation with an entry edit that was received before an operation creating the entry
4. Created an operation with thread subscription change that was received before the user became a member

In each of the cases verified that the result was correct and that the operation was removed from the queue.