Specify ORDER BY enumsortorder for postgres enums

Co-authored-by: Daniel Colson <[email protected]>

Author: jhawthorn

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -459,7 +459,7 @@ def enum_types
         query = <<~SQL
           SELECT
             type.typname AS name,
-            string_agg(enum.enumlabel, ',') AS value
+            string_agg(enum.enumlabel, ',' ORDER BY enum.enumsortorder) AS value
           FROM pg_enum AS enum
           JOIN pg_type AS type
             ON (type.oid = enum.enumtypid)