Fixed API test cases for Triggers in EPAS.

web/pgadmin/browser/server_groups/servers/databases/schemas/tables/templates/triggers/sql/ppas/12_plus/nodes.sql

@@ -1,9 +1,14 @@
-SELECT t.oid, t.tgname as name, t.tgenabled AS is_enable_trigger
+SELECT t.oid, t.tgname as name, t.tgenabled AS is_enable_trigger, des.description
 FROM pg_catalog.pg_trigger t
+    LEFT OUTER JOIN pg_catalog.pg_description des ON (des.objoid=t.oid AND des.classoid='pg_trigger'::regclass)
     WHERE NOT tgisinternal
     AND tgrelid = {{tid}}::OID
     AND tgpackageoid = 0
 {% if trid %}
     AND t.oid = {{trid}}::OID
+{% endif %}
+{% if schema_diff %}
+    AND CASE WHEN (SELECT COUNT(*) FROM pg_catalog.pg_depend
+        WHERE objid = t.oid AND deptype = 'e') > 0 THEN FALSE ELSE TRUE END
 {% endif %}
     ORDER BY tgname;