To reproduce:
- Create a Herald rule that triggers for Maniphest tasks, with a condition like "[Is newly created?] [is true]".
- Create any Maniphest Task.
- Go to the Herald Test Console.
- Do a test run on your task.
This fatals with an error like "You must setIsNewObject to a boolean first!".
The fix is probably to call `setIsNewObject(false)` on the Adapter after it is created in `HeraldTestConsoleController`.
Differential and Pholio also use this field, and may need a similar fix. You can test them by creating similar rules and doing similar test console runs.