fix(blocks): add YouTube Shorts URL support

[majiayu000]

Summary

Added support for parsing YouTube Shorts URLs (youtube.com/shorts/...) in the TranscribeYoutubeVideoBlock to extract video IDs correctly.

Changes

• Modified _extract_video_id method in youtube.py to handle Shorts URL format
• Added test cases for YouTube Shorts URL extraction

Related Issue

Fixes #11500

Test Plan

• Added unit tests for YouTube Shorts URL extraction
• Verified existing YouTube URL formats still work
• CI should pass all existing tests

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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All committers have signed the CLA.

[github-actions]

This pull request has conflicts with the base branch, please resolve those so we can evaluate the pull request.

[AutoGPT-Agent]

Thank you for your PR to fix the Wikipedia API 403 errors and add support for YouTube Shorts URLs! The changes themselves look good, but there are a couple of things that need to be addressed before this can be merged:

1. Your checklist is only partially completed. Please make sure to check off all items in the checklist:

   • CI should pass all existing tests
   • Manual verification: Wikipedia block should no longer return 403 errors
   • Manual verification: YouTube Shorts URLs should be parsed correctly

2. I noticed there's an unrelated change in the feature flags file that sets Flag.CHAT to false. Was this intentional? If it's meant to be part of this PR, could you add it to the description to clarify why this change is included?

Once the checklist is completely filled out and you've clarified the feature flag change, this PR should be ready for merging.

[github-actions]

Conflicts have been resolved! 🎉 A maintainer will review the pull request shortly.

[AutoGPT-Agent]

Thank you for your contribution to add YouTube Shorts URL support and fix the Wikipedia API issues. The code changes look good and the tests for YouTube Shorts URL extraction are helpful.

Before we can merge this PR, please complete the test plan checklist in your PR description. All items need to be checked off. Currently, only the first item ("Added unit tests for YouTube Shorts URL extraction") is checked.

Also, I notice your PR description mentions a Wikipedia API fix, but I don't see those changes in the provided diff. Could you please ensure all the changes described in your PR summary are included in the PR?

Once the checklist is fully completed and all described changes are included, we can proceed with merging this PR.