[BUG] Remove the deduplication of LEFT SEMI/ANTI JOIN with not equal predicate (#4417)

```
SELECT *
FROM
  (SELECT cs_order_number,
          cs_warehouse_sk
   FROM catalog_sales
   WHERE cs_order_number = 125005
     AND cs_warehouse_sk = 4) cs1
LEFT SEMI JOIN
  (SELECT cs_order_number,
          cs_warehouse_sk
   FROM catalog_sales
   WHERE cs_order_number = 125005) cs2
ON cs1.cs_order_number = cs2.cs_order_number
AND cs1.cs_warehouse_sk <> cs2.cs_warehouse_sk;
```

The above query has an equal predicate and a not equal predicate.
If there exists not equal preidcate, the build table should be remained
as it is. So the deduplication should be removed.

be/src/exec/hash_join_node.cpp

@@ -75,6 +75,12 @@ Status HashJoinNode::init(const TPlanNode& tnode, RuntimeState* state) {
         Expr::create_expr_trees(_pool, tnode.hash_join_node.other_join_conjuncts,
                               &_other_join_conjunct_ctxs));
 
+    if (!_other_join_conjunct_ctxs.empty()) {
+        // If LEFT SEMI JOIN/LEFT ANTI JOIN with not equal predicate,
+        // build table should not be deduplicated.
+        _build_unique = false;
+    }
+
     return Status::OK();
 }