Setting to skip PR builds for Draft PRs (run on ready_for_review)

[FBakkensen]

We are using AL-Go (AppSource template) and would like a first-class setting to prevent Pull Request Build checks from running while a PR is in Draft, but automatically run when the PR is marked “Ready for review”.

Problem / Motivation

• In AL-Go repos, PR builds are expensive (containers + build + tests).
• Our team uses Draft PRs to collaborate early; we don’t want CI noise/cost at that stage.
• We do want the full PR build to run the moment the PR is moved from draft → ready, and on subsequent pushes.

Current behavior

PR build workflows (e.g., PullRequestHandler in templates) run on PR events regardless of draft state (at least in our usage with pull_request_target).

Requested feature

Add a repo/project setting, for example:

• skipPullRequestBuildOnDrafts: true (name bikesheddable), default false for backward compatibility.

Expected behavior (when enabled)

1. PR opened as Draft → no build/test jobs executed (no required checks produced by AL-Go).
2. PR switched to Ready for review → PR build triggers and runs normally.
3. PR updated (push/synchronize) while ready → PR build runs normally.
4. PR switched back to draft (optional) → subsequent pushes do not trigger builds until ready again.

Implementation suggestion (high level)

• When generating PR build workflows, include ready_for_review in the trigger types.
• Add job-level gating like: if: github.event.pull_request.draft == false when the setting is enabled.
• Ensure behavior works for both pull_request and pull_request_target based setups.

Why this should be a setting (not manual workflow edits)

AL-Go system files are regenerated; teams need an “official” knob to avoid carrying custom workflow modifications.

Additional context

Happy to test this in preview and provide feedback/logs.