Summary:
This diff fixes the test: `TestPgRegressIndex` failure caused by D43210 / fefe8bab.
Jira: DB-16228

Test Plan: ./yb_build.sh --java-test 'org.yb.pgsql.TestPgRegressIndex'

Reviewers: mihnea, telgersma

Reviewed By: telgersma

Subscribers: yql

Differential Revision: https://phorge.dev.yugabyte.com/D43244