Aggregation with group by cannot work for Dictionary array

[viirya]

Describe the bug

We fixed some Dictionary input issue for aggregate functions like sum and avg in #6197. But we also found another issue of Dictionary input. Aggregation with group by cannot work for Dictionary array.

To Reproduce

I've added test cases in datafusion/core/tests/sqllogictests/test_files/aggregate.slt.

DataFusion error: External error: Arrow error: Invalid argument error: RowConverter column schema mismatch, expected Int64 got Dictionary\(Int64, Int64\)
select sum(x_dict) from value_dict group by x_dict % 2;

Expected behavior

Aggregation with group by should work with Dictionary array.

Additional context

No response