Add new spreadsheet registrations to session attendee roster

Spreadsheet registration rows go unprocessed when updates aren't pushed, causing rosters to miss attendees. Add qualifying rows to attendee lists so rosters match registrations before the event.

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Overview

Manual spreadsheet enrollments create check-in friction and wasted registration time. Route qualifying sheet rows into the event attendee list so session rosters are accurate and registration reconciliation completes ahead of the event.