[Update] Enhancements and Fixes in Needlebench

[Mor-Li]

1. Optimized Needlebench Configurations

   • Streamlined the writing of Needlebench config files by eliminating redundant code and improving structure.
   • Reduced code duplication across multiple configuration files, making the setup more efficient and easier to manage.

2. Updated Multi-Needle-Reasoning Task

   • Modified the Multi-Needle-Reasoning task to use ATC-specific needles, aligning the task with the ATC dataset requirements.
   • Adjusted the configuration settings to better suit the ATC dataset, ensuring accurate and relevant results.

3. ATC Fixes

   • The default configuration for ATC has been changed to use a fill-in-the-blank format \boxed{}.
   • Additionally, the diversity of the tasks has been increased.