refactor: otp-2597: Improve sprint review preperation

• if theme is empty, fallback to epic
  • if epic is empty and type is update, use update
• if summury is empty, fall back to commit

Closes otp-2597

Summary by CodeRabbit

• New Features

  • Enhanced CSV processing for sprint reviews, allowing for additional data fields such as "TYPE," "EPIC," and "COMMIT."
  • Improved data grouping logic for better categorization based on "THEME," "EPIC," and "TYPE."
  • Flexible output formatting with optional issue number display.

• Bug Fixes

  • Refined error handling for cleaner and more reliable data processing.

• Improvements

  • Updated presentation formatting for better visual coherence in output.