Integrate CRT with Iceberg S3 client

### Feature Request / Improvement

Re-opening the following issue: https://github.com/apache/iceberg/issues/6739

### Query engine

Other

### Willingness to contribute

- [ ] I can contribute this improvement/feature independently
- [ ] I would be willing to contribute this improvement/feature with guidance from the Iceberg community
- [x] I cannot contribute this improvement/feature at this time

Start by reading this issue and the referenced Iceberg issue #6739; the payload names no files, tests, or entry points. Clarify the intended CRT integration boundaries for the S3 client with the Iceberg community, then define the affected code and tests and agree on completion criteria before implementation.

Written by the indexing model from the issue text.