[EDU-2056] Add webhook concurrency limit

[m-hulbert]

Description

This PR adds a missing limit for webhook concurrency to the limits page.

Checklist

• Commits have been rebased.
• Linting has been run against the changed file(s).
• The PR adheres to the writing style guide and contribution guide.

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on this repository.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbit review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch edu-2056-add-webhook-conc

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbit in a new review comment at the desired location with your query.
• PR comments: Tag @coderabbit in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbit gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbit read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

CodeRabbit Commands (Invoked using PR/Issue comments)

Type @coderabbit help to get the list of available commands.

Other keywords and placeholders

• Add @coderabbit ignore or @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbit summary or @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbit or @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Status, Documentation and Community

• Visit our Status Page to check the current availability of CodeRabbit.
• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.

[SimonWoolf]

the maximum number of webhook requests that can be processed at the same time

Not sure this captures it. It implies we're processing something, but the whole point with this limit is that it's the customer processing it. Maybe "The maximum number of unbatched webhook requests that can be in-flight at any one time from a given source"?

Also I'm not sure I understand the reasoning for presenting this one limit as two different ones.

(and indeed the one above is probably out of date since the limit only applies to http1 unbatched webhooks but google functions and azure endpoints probably accept http2 these days)