[Reap Benefit]: Fetch the correct number of users from WA group

[AmishaBisht]

https://discord.com/channels/717975833226248303/1471437259613147434/1471437259613147434

[shijithkjayan]

Suggested syncing the contacts in the UI and relying on the inserted_at time in BigQuery to get the count, unfortunately there is no other way to get this data.