[Enhancement] Classify unsupported-feature errors as client errors (4xx) on the SQL path#5569

RyanL1997 merged 4 commits into

opensearch-project:mainopensearch-project/sql:mainfrom

RyanL1997:fix/sql-unsupported-feature-4xxRyanL1997/sql:fix/sql-unsupported-feature-4xxCopy head branch name to clipboard