sql: SHOW FUNCTIONS FROM pg_catalog is slow #94746
Description
Describe the problem
See the title.
This may be fallout from #94339? unsure
To Reproduce
cockroach demo then show functions from pg_catalog;
Expected behavior
Lists UDF overloads in pg_catalog schema.
cc @jordanlewis @postamar for triage.
Jira issue: CRDB-23115