Summary:
D39523 revision enabled ASH by default, which started raising extra warning messages for `testPgssResetBetweenDiagnostics` test, thereby failing assertions.
Current diff disables ASH for certain tests.
Jira: DB-13182

Test Plan: ./yb_build.sh --java-test 'org.yb.pgsql.TestYbQueryDiagnostics#testPgssResetBetweenDiagnostics'

Reviewers: asaha

Reviewed By: asaha

Differential Revision: https://phorge.dev.yugabyte.com/D40126