[Bug] Exceptions are not being tracked on activeadmin

[brunvez]

Bug report:

Expected Behavior:

Exceptions on activeadmin should be tracked

Actual Behavior:

Exceptions are not being tracked

Steps to Reproduce:
With ExceptionHunter enabled in the current environment and activeadmin correctly setup

1. Go to an activeadmin page that throws an error (you can force it via code)
2. Force the error to be raised
3. Go to /exception_hunter/errors
4. The error is not there