Make restartCatalog command uninterruptible

This is only for fixing the test.

restartCatalog is only used by rollback in production environment. Therefore, it never encounters interruption. However, in interrupt fuzzer suite, some generated tests run the command manually and interrupt it, thus causing an invariant to fail.

We should either blacklist restartCatalog command in this suite, or make restartCatalog uniterruptible.