Split the automation bot logic in two methods

Context

Follow-up of !2838 (comment 1952977495)

What does this MR do and why?

Split the automation bot logic in two methods

We want to separate known automation authors and automations we "think" are coming from automations authors, but that were not verified.

Expected impact & dry-runs

None: it is a refactoring.

Action items

• If adding environment variables for reactive processors, update config/triage-web.yaml and .gitlab/ci/triage-web.yml
• (If applicable) Add documentation to the handbook pages for Triage Operations =>
• (If applicable) Identify the affected groups and how to communicate to them:
  • /cc @person_or_group =>
  • Relevant Slack channels =>
  • Engineering week-in-review