Adding test when registering a batching rule for a CompositeImplicitAutograd operation (#89465)
This is a Follow on from https://github.com/pytorch/pytorch/pull/88771 which should close out https://github.com/pytorch/functorch/issues/1009 I've got another PR where I'm moving some operators over https://github.com/pytorch/pytorch/pull/89762
you can see that the new test file is being picked [run here](https://github.com/pytorch/pytorch/actions/runs/3617298059/jobs/6096218583#step:10:472)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89465
Approved by: https://github.com/zou3519
