* Add workflow_dispatch support to PR Help Wanted check
This update allows the PR Help Wanted workflow to be triggered manually via workflow_dispatch with a specified PR URL. It adds logic to fetch PR details using the GitHub CLI for manual runs and unifies variable handling for both event types.
* Update workflow to use PR number instead of URL
Changed the workflow_dispatch input from 'pr_url' to 'pr_number' and updated the script to construct the PR URL from the number.
* Move help-wanted check for draft PRs into script
* Don't prefix URL with `#`
* Invert draft checking logic
Inverting this logic because anything other than "false" means we should skip it.
* Move PR draft status check to shell script
The logic for checking if a pull request is a draft has been moved from the GitHub Actions workflow YAML to the check-help-wanted.sh script. This simplifies the workflow file and centralizes the draft status check within the script.
Co-authored-by: Kynan Ware <47394200+BagToad@users.noreply.github.com>
Co-authored-by: Babak K. Shandiz <babakks@github.com>
Co-authored-by: Andy Feller <andyfeller@github.com>
