This ticket is to make mongod recover on initial sync which database prefixes to block/reject requests for.

• Make initial sync call the recoverTenantMigrationAccessBlockers function added under SERVER-48941 just before where prepared transactions are recovered at the end of initial sync
• Prevent the op observer for updates to config.migrationDonors from firing while the node is in initial sync (see example)

Similarly to SERVER-48941, this ticket should test that the code works by adding a node to the donor replica set

• while the migration is in the "blocking" state
• after the migration has committed
• after the migration has aborted

and confirming that the in-memory state was recovered correctly.