Go through DAG processor metrics and make bundle aware

### Body We need to go through all the different metrics and make sure 1) they all still make sense to emit and 2) they are bundle aware. This does mean some breaking changes for deployment managers, but we should just document what they are in our newsfragment so deployment managers can adjust to the changes. ### Committer - [x] I acknowledge that I am a maintainer/committer of the Apache Airflow project.