Assessment: Gemini Batch Processing Fix & Dataset Preview Row Limiting

[vprashrex]

Describe the enhancement you'd like

• Fixed issues related to Gemini batch processing to ensure stable and reliable execution during AI assessment workflows.
• Enhanced the dataset ID endpoint by adding a limit_row query parameter, enabling dataset preview responses to return only a limited number of rows.

Why is this enhancement needed?

• The Gemini batch processing fix is required to support accurate and consistent AI assessment testing workflows.
• Previously, fetching large datasets caused the frontend browser to freeze or lag due to excessive row rendering on the client side. The newly added limit_row functionality allows the frontend to request only a small preview set (for example, 5 rows), improving performance, reducing UI lag, and providing a smoother user experience.