SRE-720: Simplify PR-title preflight — drop two-step skip logic

[TimDiekmann]

Summary

• Folds the bot-author check into the job-level if::

  if: (github.event_name == 'pull_request' || github.event_name == 'pull_request_target') && github.event.pull_request.user.type != 'Bot'

• Removes the separate Determine whether to skip step and the unused ignored-actors workflow input.

Same behavior for both human and bot authors; just less moving parts. The ignored-actors input was added speculatively in SRE-715 and no consumer uses it — trivial to re-add as another && clause if a future case needs to exempt a human account.

Related: SRE-720, follow-up to SRE-715.

Test plan

• Self-PR (this PR touches the workflow file) triggers the workflow and passes (SRE-720 in title).
• After merge, a human-authored PR without an ID still fails the check.
• After merge, a hash-worker[bot] / dependabot[bot] PR still skips correctly.

[cursor]

PR Summary

Low Risk
Low risk GitHub Actions workflow change that only adjusts when the PR-title check runs; no production code paths are affected.

Overview
Simplifies the PR-title preflight workflow by removing the separate “determine whether to skip” step and the unused workflow_call input for ignored-actors.

The bot exemption is now enforced directly in the job-level if: condition (pull_request.user.type != 'Bot'), keeping the Linear issue ID validation logic unchanged for human-authored PRs.

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[augmentcode]

🤖 Augment PR Summary

Summary: This PR simplifies the PR-title preflight workflow by removing the two-step skip mechanism.

Changes:

• Moves the bot-author exemption into the job-level if: condition.
• Removes the dedicated “Determine whether to skip the check” step and its output gating.
• Drops the unused workflow_call input ignored-actors and related logic.

Technical Notes: Behavior remains the same for bot-authored PRs (workflow job is skipped), while human-authored PRs continue to be validated for a Linear issue ID in the title prefix.

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[augmentcode]

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