Feat: Download Preview Page Before File Export

[PrishaJain64]

Related Issue

Closes #309

Summary

Added a data review step before downloading task data. Previously, clicking the Download Data button immediately downloaded the file. Now, users are first presented with a review table containing the data, along with a dedicated Download button to export the reviewed data.

Changes Made

1. Implemented a review table that displays task data before download.
2. Modified the Download Data button workflow to open the review interface instead of directly downloading the file.
3. Added a separate Download button within the review table view.
4. Improved user experience by allowing users to verify the data before exporting it.
5. Integrated backend endpoint responses with the review table for data display.

Testing

1. Verified that clicking Download Data opens the review table instead of immediately downloading the file.
2. Confirmed that all task records are correctly displayed in the review table.
3. Tested the Download button to ensure the exported file contains the same data shown in the review table.
4. Checked behavior with multiple records and empty data scenarios.
5. Verified that existing download functionality remains intact after the UI changes.

Screenshots

Checklist

• Code follows project style
• Tested locally
• No unrelated changes included
• Documentation updated (if applicable)