Grouping operations on large datasets can overflow i32 offsets

### Describe the bug

The ByteGroupValueBuilder can raise an `offset overflow` error if the columns (string or binary) have a large number of values.

Also see: https://github.com/apache/datafusion-comet/issues/4718

### To Reproduce

https://github.com/apache/datafusion-comet/issues/4718 has a reproduction

### Expected behavior

Grouping operations ideally should not overflow and return an error, even on large input data

### Additional context

_No response_

Start with ByteGroupValueBuilder and use the reproduction in datafusion-comet issue 4718 to observe the offset overflow during grouping on large string or binary columns. Trace the grouping path involved and verify that large inputs no longer trigger the reported overflow, while preserving the expected error behavior described in the issue.

Written by the indexing model from the issue text.