[mergebot] An ignore current flag (#96756)
with https://github.com/pytorch/test-infra/pull/3882
Add -ic/--ignore-current flag for merge. It ignores the currently failing checks but will stop when there is a new failure. If there are no pending checks, it fails and tells you to use -f/--force.
Doesn't work on ghstacks with more than 1 PR.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/96756
Approved by: https://github.com/huydhn
