Plan::ULTIMATE_TRIAL_PAID_CUSTOMER include guest as billable
This issue is to cover one action required after the research in Spike issue #423312 (comment 1646447232).
When a namespace is under Plan::ULTIMATE_TRIAL_PAID_CUSTOMER, we should continue to calculate users as if they are still on SaaS Premium - meaning overage users should still be charged for at the Premium price and guest users should still count as billable users.
Proposal
The solution is straight-forward: we can simply remove Plan::ULTIMATE_TRIAL_PAID_CUSTOMER
from the exclude_guests?
plan list.