FIX: PR formatting check incorrectly passes for templates with unclosed HTML comments

[Copilot]

Issue

The PR formatting check workflow was incorrectly allowing PRs with just the PR template (no meaningful content) to pass validation. This happened because:

1. The PR template contains an unclosed HTML comment <!-- in the Summary section that starts a long comment block
2. The validation logic only removed complete HTML comments (<!--...-->) using the regex /<!--[\s\S]*?-->/g
3. The unclosed <!-- remained in the content and was counted toward the minimum 10-character requirement
4. Even very short summaries like "Short" would pass validation because "Short\n\n\n<!--" has 12 characters

Root Cause

In the PR template, after the Summary section there's an unclosed HTML comment:

### Summary   
<!-- Insert your summary of changes below. Minimum 10 characters required. -->  


<!-- 
### PR Title Guide
...

The regex /<!--[\s\S]*?-->/g matches only the first complete comment but leaves the unclosed <!-- which gets counted as meaningful content.

Fix

Updated the HTML comment removal regex from:

summaryContent.replace(/<!--[\s\S]*?-->/g, '');

To:

summaryContent.replace(/<!--[\s\S]*?(?:-->|$)/g, '');

This pattern removes both:

• Complete HTML comments: <!-- comment -->
• Unclosed HTML comments at end of content: <!-- comment

Testing

Validated the fix with multiple scenarios:

• ✅ Empty template now correctly fails validation
• ✅ Template with short summary (< 10 chars) now correctly fails validation
• ✅ Template with valid summary (≥ 10 meaningful chars) still passes validation
• ✅ Fully compliant PRs continue to pass validation

This ensures PRs must have genuinely meaningful summaries rather than just template placeholders.

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[bewithgaurav]

closing this since its a very minor fix, added it inside #186