AB#32004 SonarQube fixes

[jacobwillsmith]

Pull request overview

This pull request addresses SonarQube findings in AI prompt-related code paths with minimal, behavior-preserving changes.

The updates focus on maintainability and code-quality compliance: improving catch-clause logging, simplifying a PDF extraction loop, switching regex usage to compile-time generated patterns, and simplifying a nested conditional in scoresheet view logic.

Changes:

• Updated catch-clause logging in OpenAIService to pass the caught JsonException to _logger.LogWarning(...)
• Simplified PDF page text loop in TextExtractionService using Select(page => page.Text) while preserving truncation behavior
• Replaced runtime regex replacements in TextExtractionService with GeneratedRegex-based compile-time regex helpers
• Simplified nested confidence parsing condition in AssessmentScoresWidgetViewComponent

[github-actions]

🧪 Unit Test Results (Parallel Execution)

📊 Summary

Result	Count
✅ Passed	451
❌ Failed	0
⚠️ Skipped	0

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