fix: improve Chrome URL validation and partial report handling

[SrashtiChauhan]

Fixes

1. Chrome Web Store URL Validation

• Removed strict URL validation logic
• Added support for the newer Chrome Web Store URL format
• Uses extractExtensionId() as the single source of truth

2. Partial Report Handling

• Displays available scores even in partial reports
• Avoids forcing scores to null
• Adds safe fallback handling for missing data

3. UI Improvements

• Removed duplicate sidebar tile rendering
• Improved consistency in score and band display

Impact

• Fixes scan failures for valid Chrome Web Store URLs
• Ensures UI reflects actual backend data
• Improves overall reliability and user experience

Testing

Tested locally with:

• Valid Chrome Web Store URLs (new format)
• Partial scan scenarios (missing analysis steps)

[SrashtiChauhan]

Hi @Stanzin7
Could you please review the pr.

[sapnilbiswas]

This seems pretty invalid