The `/checkuser/v0/temporaryaccount/{name}` REST API endpoint returns all the IP addresses used by a given temporary account. The `TemporaryAccountHandler` class which implements this endpoint selects the IP addresses from the `cu_changes` table. However, when event table migration is set to no longer write to `cu_changes` this will no longer include all the IP addresses that were previously included in the results.
As such, `TemporaryAccountHandler::getData` should be updated to read the IP addresses from all three CheckUser result tables depending on the migration stage for event table migration.
======Acceptance criteria
* [] `TemporaryAccountHandler::getData` reads from `cu_log_event` and `cu_private_event` if `$wgCheckUserEventTablesMigrationStage` includes `SCHEMA_COMPAT_READ_NEW`