follwing sql reports `Error during planning: Unsupported operator in the subquery plan.`

[l1t1]

Describe the bug
when I run following sql, it reports Error during planning: Unsupported operator in the subquery plan.

To Reproduce

create table rectangle as select i id, (random()*99)::int+1 height from unnest(generate_series(1,1000,1))t(i);

sss="""
with t as
 (
 select left1,width1,min(height)min_height
 from
 rectangle a cross join unnest(generate_series(1,1000,1))t(left1)cross join unnest(generate_series(1,1000,1))t1(width1)
 where left1+width1-1<=1000
 and id between left1 and left1+width1-1
 group by left1,width1
 )
 select *,min_height*width1 from t where min_height*width1 = (select max(min_height*width1)from t); 

"""

Expected behavior
it runs as normal

Additional context
the error log

Python 3.12.2 (tags/v3.12.2:6abddd9, Feb  6 2024, 21:26:36) [MSC v.1937 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import datafusion
>>> from datafusion import SessionContext
>>> ctx = SessionContext()
>>> datafusion.__version__
'40.1.0'
>>> ctx.sql("create table rectangle as select i id, (random()*99)::int+1 height from unnest(generate_series(1,1000,1))t(i);")
DataFrame()
++
++
>>> ctx.sql("select * from rectangle limit 4")
DataFrame()
+----+--------+
| id | height |
+----+--------+
| 1  | 78     |
| 2  | 64     |
| 3  | 56     |
| 4  | 79     |
+----+--------+
>>> sss="""
... with t as
...  (
...  select left1,width1,min(height)min_height
...  from
...  rectangle a cross join unnest(generate_series(1,1000,1))t(left1)cross join unnest(generate_series(1,1000,1))t1(width1)
...  where left1+width1-1<=1000
...  and id between left1 and left1+width1-1
...  group by left1,width1
...  )
...  select *,min_height*width1 from t where min_height*width1 = (select max(min_height*width1)from t);
... """
>>> ctx.sql(sss)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python312\Lib\site-packages\datafusion\dataframe.py", line 73, in __repr__
    return self.df.__repr__()
           ^^^^^^^^^^^^^^^^^^
Exception: check_analyzed_plan
caused by
Error during planning: Unsupported operator in the subquery plan.
>>>

[kosiew]

The Unsupported operator in the subquery plan is LogicalPlan::Unnest