- Closes #21065.

In plans such as the following, dynamic filters are not pushed down through the aggregation
```
CREATE TABLE data (a VARCHAR, ts TIMESTAMP, value DOUBLE)
    AS VALUES
      ('h1', '2024-01-01T00:05:00', 1.0),
      ('h1', '2024-01-01T00:15:00', 2.0),
      ('h2', '2024-01-01T00:25:00', 3.0),
      ('h3', '2024-01-01T00:35:00', 4.0);

SELECT * FROM contexts c
  INNER JOIN (
    SELECT a, date_bin(interval '1 hour', ts) AS bucket, min(value) AS min_val
    FROM (SELECT value, a, ts FROM data)
    GROUP BY a, date_bin(interval '1 hour', ts)
  ) agg ON c.a = agg.a;
```

```
    HashJoinExec: mode=Auto, join_type=Inner, on=[(a@0, a@0)]
      DataSourceExec: partitions=1
      ProjectionExec: [a@0, date_bin(1h, ts)@1 as bucket, min(value)@2 as min_val]
        AggregateExec: mode=FinalPartitioned, gby=[a@0, date_bin(1h, ts)@1], aggr=[min(value)]
          AggregateExec: mode=Partial, gby=[a@1, date_bin(1h, ts@2)], aggr=[min(value)]
            ProjectionExec: [value@2, a@0, ts@1]        ← reorders columns
              DataSourceExec: partitions=1
```

`AggregateExec::gather_filters_for_pushdown` compared parent filter columns (output schema indices) against grouping expression columns (input schema indices). When a `ProjectionExec` below the aggregate reorders columns, the index mismatch causes filters (such as HashJoin dynamic filters) to be incorrectly blocked.

This change fixes the column index mapping in `AggregateExec::gather_filters_for_pushdown`

  - `test_pushdown_through_aggregate_with_reordered_input_columns` — filter on grouping column with reordered input is pushed down
  - `test_pushdown_through_aggregate_with_reordered_input_no_pushdown_on_agg_result` — filter on aggregate result column is not pushed down
  - `test_pushdown_through_aggregate_grouping_sets_with_reordered_input` — GROUPING SETS: filter on common column pushed, filter on missing column blocked
  - `test_hashjoin_dynamic_filter_pushdown_through_aggregate_with_reordered_input` — HashJoin dynamic filter pushes through aggregate with reordered input and is populated with values after
   execution
  - All tests verified to fail without the fix

No.

Author: jayshrivastava