Make the superuser flag bypass TLD access checks

The --superuser command in the nomulus command-line tool should be
bypassing checks on whether the passed-in registrar client ID has access
to the TLD in question, but currently it is not.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=158974462

java/google/registry/flows/domain/DomainTransferRequestFlow.java

@@ -217,9 +217,9 @@ public final class DomainTransferRequestFlow implements TransactionalFlow {
     if (gainingClientId.equals(existingDomain.getCurrentSponsorClientId())) {
       throw new ObjectAlreadySponsoredException();
     }
-    checkAllowedAccessToTld(gainingClientId, existingDomain.getTld());
     verifyTransferPeriodIsOneYear(period);
     if (!isSuperuser) {
+      checkAllowedAccessToTld(gainingClientId, existingDomain.getTld());
       verifyPremiumNameIsNotBlocked(targetId, now, gainingClientId);
     }
   }