Don't Autopublish Expired Feeds (MTC)

[binh-dam-ibigroup]

Checklist

• Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
• Any modified or new methods or classes have helpful JavaDoc and code is thoroughly commented
• The description lists all applicable issues this PR seeks to resolve
• [na] The description lists any configuration setting(s) that differ from the default settings
• All tests and CI builds passing

Description

This PR adds logic to the AutoPublish job to exclude expired feeds from being autopublished.
Subscribers (and app admins) will be notified on attempts to fetch and auto-publish an expired feed.

(Reminder that MTC now uses the dev branch for datatools-server)

Config settings: Any server.yml config that contains all of the below:

extensions:
  mtc:
    disableAutoPublish: false
    enabled: true