[Fix](Nereids) fix leading hint with update of alias name (#34434) (#35046)

Problem:
when using leading like leading(tbl1 tbl2) in
"select * from (select tbl1.c1 from t1 as tbl1 join t2 as tbl2) join t3 as tbl2 on tbl2.c3 != 101;",
in which tbl2.c3 means t3.c3 but not t2.c3
Causes and solved:
when finding columns in condition, leading hint would find tbl2.c3's RelationId, and when we collect RelationId and aliasName
we should update it if aliasName is repeat

fe/fe-core/src/main/java/org/apache/doris/nereids/hint/LeadingHint.java

@@ -216,6 +216,10 @@ public class LeadingHint extends Hint {
                 pair.second = relationIdTableNamePair.second;
                 isUpdate = true;
             }
+            if (pair.second.equals(relationIdTableNamePair.second)) {
+                pair.first = relationIdTableNamePair.first;
+                isUpdate = true;
+            }
         }
         if (!isUpdate) {
             relationIdAndTableName.add(relationIdTableNamePair);