kbfs_ops_test: fix tautalogical test check
kbfs_ops_test: fix tautalogical test check

Suggested by jakob223.

Issue: #19164

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client