feat: add paused pipeline reminders for seer

[joseph-sentry]

refs CW-926

we want this in discuss seer infra since we added canary deploys for seer
which means we will now automatically pause the pipeline, and it's easy to
miss messages when the pipeline has failed

[linear-code]

CW-926 Cleanup unused `allowBackgroundAgentDelegation` org option

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.17%. Comparing base (f3c4004) to head (63c7ee0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #977   +/-   ##
=======================================
  Coverage   89.17%   89.17%           
=======================================
  Files         125      125           
  Lines        3899     3899           
  Branches      803      803           
=======================================
  Hits         3477     3477           
  Misses        387      387           
  Partials       35       35           

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