Add summary counts on survey popup Stats (Delivered/Started/Completed/Closed + Skipped)

Description: As a user analyzing survey popup performance, I want a summarized Stats view that shows total counts for each status—Delivered, Started, Completed, and Closed—and a clear Non-completed/Skipped total, so I can quickly quantify how many users skip the survey without manually counting individual rows. Problem: The current Stats page lists individual users with statuses but offers no aggregated totals. To understand how many users skipped or did not complete the survey, I must scroll and manually tally counts, which is time-consuming and error-prone. Benefit: A summarized counts view provides immediate visibility into engagement and drop-off, reduces manual effort, and enables faster decisions to improve survey effectiveness.