[fix](nereids) bucket shuffle and colocate join is not correctly recognized (#17807)

1. close (https://github.com/apache/doris/issues/16458) for nereids
2. varchar and string type should be treated as same type in bucket shuffle join scenario.
```
create table shuffle_join_t1 ( a varchar(10) not null )
create table shuffle_join_t2 ( a varchar(5) not null, b string not null, c char(3) not null )
```
the bellow 2 sqls can use bucket shuffle join
```
select * from shuffle_join_t1 t1 left join shuffle_join_t2 t2 on t1.a = t2.a;
select * from shuffle_join_t1 t1 left join shuffle_join_t2 t2 on t1.a = t2.b;
```
3. PushdownExpressionsInHashCondition should consider both hash and other conjuncts
4. visitPhysicalProject should handle MarkJoinSlotReference

fe/fe-common/src/main/java/org/apache/doris/catalog/Type.java

@@ -372,6 +372,11 @@ public abstract class Type {
                 || isScalarType(PrimitiveType.STRING);
     }
 
+    public boolean isVarcharOrStringType() {
+        return isScalarType(PrimitiveType.VARCHAR)
+                || isScalarType(PrimitiveType.STRING);
+    }
+
     public boolean isVarchar() {
         return isScalarType(PrimitiveType.VARCHAR);
     }