Fix merge conflicts

- Update regression tests to meet the changes in the regression
   test output.
 - Replace Ifs with Asserts given that the check is already done

src/backend/distributed/planner/multi_logical_optimizer.c

@@ -3218,18 +3218,9 @@ WorkerLimitCount(MultiExtendedOp *originalOpNode)
 	 * certain expressions such as parameters are not evaluated and converted
 	 * into Consts on the op node.
 	 */
-	if (!IsA(originalOpNode->limitCount, Const))
-	{
-		ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-						errmsg("unsupported limit clause")));
-	}
-
-	/* same as the above but this time for OFFSET clause */
-	if (originalOpNode->limitOffset && !IsA(originalOpNode->limitOffset, Const))
-	{
-		ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-						errmsg("unsupported offset clause")));
-	}
+	Assert(IsA(originalOpNode->limitCount, Const));
+	Assert(originalOpNode->limitOffset == NULL ||
+		   IsA(originalOpNode->limitOffset, Const));
 
 	/*
 	 * If we don't have group by clauses, or if we have order by clauses without

src/test/regress/expected/multi_subquery_behavioral_analytics.out

@@ -1930,7 +1930,7 @@ FROM (
  ORDER BY 2 DESC, 1
  LIMIT $1 OFFSET $2;
  EXECUTE parametrized_limit(3,3);
-ERROR:  unsupported limit clause
+ERROR:  no value found for parameter 1
 PREPARE parametrized_offset AS
 SELECT user_id, array_length(events_table, 1)
 FROM (
@@ -1947,7 +1947,7 @@ FROM (
  ORDER BY 2 DESC, 1
  LIMIT 3 OFFSET $1;
  EXECUTE parametrized_offset(3);
-ERROR:  unsupported offset clause
+ERROR:  no value found for parameter 1
 SET client_min_messages TO DEFAULT;
 DROP FUNCTION volatile_func_test();
 SET citus.subquery_pushdown to OFF;