Use a single flag to handle all changes for large repo

[maryliag]

Use a single large_repo variable to cap the section at 50 PRs, don't show draft PRs and don't get trigger by webhook calls (only hourly and manual).

The amount of calls was making the GH API hit the quota

[Copilot]

Pull request overview

This PR simplifies the pull-request-dashboard configuration by collapsing the two separate large-repo tuning knobs (max_rows_per_section and skip_drafts) into a single large_repo boolean. It also introduces a new behavior where webhook-driven runs are skipped for large_repo targets to avoid exhausting the GitHub App's hourly API quota, while scheduled and manual runs still process them.

Changes:

• Replaced max_rows_per_section/skip_drafts with a single large_repo flag across the Python script, reusable workflow, config, and docs (50-row cap + drafts omitted are now presets behind the flag).
• Added a Check webhook large-repo skip step that suppresses webhook-triggered refreshes (token minting + dashboard job) for large repos, driven by the trigger event type.
• Updated repositories.json and README.md to reflect the consolidated flag and the new triggering behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/scripts/pull-request-dashboard/dashboard.py	Replaces two CLI args with --large-repo, introduces LARGE_REPO_MAX_ROWS_PER_SECTION = 50, and removes now-obsolete validation.
.github/workflows/pull-request-dashboard-repo.yml	Swaps the two reusable-workflow inputs for large_repo and passes --large-repo to the script.
.github/workflows/pull-request-dashboard.yml	Adds webhook large-repo skip step and gates token creation / precondition on it; passes large_repo to the matrix job.
.github/scripts/pull-request-dashboard/repositories.json	Updates the collector-contrib entry to use large_repo: true.
pull-request-dashboard/README.md	Documents the consolidated large_repo field and its rendering + triggering effects.

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[mx-psi]

At this point we could call the option "is_collector_contrib" 😅. LGTM!