🧹 Fix empty catch blocks swallowing exceptions in Program.cs

[ManupaKDU]

🎯 What: Removed empty catch blocks in Program.cs for unhandled exception handlers (Application_ThreadException and CurrentDomain_UnhandledException).
💡 Why: Empty catch blocks were swallowing exceptions thrown from ReportException, hiding potential bugs or errors within the unhandled exception handlers. By keeping the finally block, we still safely terminate the application even if exception reporting itself fails, but we don't silently eat exceptions anymore.
✅ Verification: Verified C# syntax using Mono C# compiler (mcs --parse).
✨ Result: Improved code health and maintainability by adhering to exception-handling best practices, without changing application shutdown behavior.

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PR created automatically by Jules for task 10183892535643029831 started by @manupawickramasinghe

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