Follow up to T154681
We would like to compare the experiences of 10% of users who have related pages disabled with the 90% of users who have it enabled to see whether the 10% of users who have it disabled read less pages than those that have it.
To do this, we need to use the schema revision 16352530
Add to the existing schema:
- Log an event feature-enabled for users where the feature is enabled if allowed by EventLogging sampling
- Log an event feature-disabled for users where the feature is disabled if allowed by EventLogging sampling
- Every existing event should also send an isEnabled flag which says whether it's possible for the user to see related pages.