Fix pr_comments output being empty when pr-comments input is disabled

[Copilot]

Problem

The steps.commit-check.outputs.pr_comments output was empty when the pr-comments input was set to false (which is the default). This prevented users from accessing the formatted commit check results in their workflows, even when they only wanted the output data without posting actual PR comments.

# This would result in empty pr_comments output
- uses: commit-check/commit-check-action@v1
  id: commit-check
  with:
    pr-comments: false  # default value

# This would fail because pr_comments is empty
- name: Save results
  run: echo "${{ steps.commit-check.outputs.pr_comments }}" > pr-comments.txt

Root Cause

The pr_comments output was only being set inside the add_pr_comments() function, which returns early when PR_COMMENTS == "false". This meant the output was never written to $GITHUB_OUTPUT when PR comments were disabled.

Solution

• Created new set_pr_comments_output() function that always sets the pr_comments output regardless of the pr-comments input setting
• Modified main() function to call set_pr_comments_output() after all other operations
• Removed output setting from add_pr_comments() to avoid duplication and maintain single responsibility

Result

Now steps.commit-check.outputs.pr_comments is always available and contains the properly formatted commit check results:

- uses: commit-check/commit-check-action@v1
  id: commit-check
  with:
    pr-comments: false  # PR comments disabled

# This now works reliably
- name: Save results  
  run: echo "${{ steps.commit-check.outputs.pr_comments }}" > pr-comments.txt

# Output format examples:
# Success: "# Commit-Check ✔️"
# Failure: "# Commit-Check ❌\n```\nError details here\n```"

This change maintains backward compatibility while fixing the missing output issue. Users can now access commit check results programmatically regardless of their PR commenting preferences.

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