Add PostgreSQL 19 compatibility

[sibowu-aws]

Issue #, if available:
#305

Description of changes:

Add PostgreSQL 19 compatibility

• Add PG19 branch for FUNCNAME_GET_CANDIDATES macro to pass the new
  fgc_flags parameter added to FuncnameGetCandidates()

https://github.com/postgres/postgres/blob/master/src/include/catalog/namespace.h#L124

• Handle CreateSchemaCommand signature change to accept ParseState*
  instead of a raw query string
  https://github.com/postgres/postgres/blob/master/src/include/commands/schemacmds.h#L23

• Wrap log_min_messages access in LOG_MIN_MESSAGES_VALUE macro to
  account for the int-to-int[] type change
  https://github.com/postgres/postgres/blob/da6874635db2e8ab95150481c992f03ec6094805/src/include/utils/guc.h#L298

• Include utils/wait_event.h, catalog/pg_database.h, and
  utils/lsyscache.h explicitly since they are no longer transitively
  included via pgstat.h

when we fixed above, the second complie with below errors

implicit declaration of function 'get_database_name', 'WAIT_EVENT_MESSAGE_QUEUE_RECEIVE' undeclared

• Add missing includes for parser/parse_node.h and utils/tuplestore.h

Also

PG19 changed the "function not found" error from HINT to DETAIL, which made the pg_tle_versions test output differ across versions.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.