Remove triggers from pipelines and execute ABID validator on label change

[p3dr0rv]

Something changed on ADO and that caused the pipeline to stop running on PR, the solution was to remove the trigger tag.

If you didn't specify any triggers, and the Disable implied YAML CI trigger setting is not enabled, the default is as if you wrote:

trigger:
  branches:
    include:
    - '*'  # must quote since "*" is a YAML reserved character; we want a string

[github-actions]

❌ Work item link check failed. Description does not contain AB#{ID}.

Click here to Learn more.

[SammyO]

@p3dr0rv do we know why this was introduced and thus if we're okay to remove these checks? To rephrase: are we sure we're not disabling some new (security?) initiative?

[p3dr0rv]

@p3dr0rv do we know why this was introduced and thus if we're okay to remove these checks? To rephrase: are we sure we're not disabling some new (security?) initiative?

I think it's ok to remove this section, I wrote these files, and they worked at the time. Now it seems the logic for triggering the pipes is different.