[Watcher] How to handle neutral vs. success?

Watch workflow: https://github.com/Azure/azure-rest-api-specs/actions/runs/14371008117/job/40293930985

In this case, the check run reported a neutral status and the LintDiff workflow reported success. The LintDiff workflow can never report a neutral status.

How should neutral be treated w/r/t a workflow's reported success or failure?

Start with the linked Watch workflow run and inspect the neutral check-run result alongside the LintDiff workflow's success result. Trace where these workflow outcomes are interpreted, then establish and apply the expected relationship between neutral and success or failure.

Written by the indexing model from the issue text.