Fix All Type of file preview

When a diff file type is opened other than image, it opens a blank carousel while the file gets downloaded automatically. Instead, let's show a msg that the file has been downloaded to their system

Look for the component that handles file previews and the carousel display. Identify where non-image file types are currently handled and modify the UI to show a download confirmation message instead of a blank carousel. Check for existing download logic and ensure the message appears only after the file download is complete.

Written by the indexing model from the issue text.