fix: render binary result values safely

[rajp152k]

Summary

• normalize bytes, bytearray, and memoryview values to lossless hexadecimal before constructing SQLit's Arrow result backend
• cover initial tables, incremental rows, and the decimal-backed incremental rendering path

Fixes #322.

Test plan

uv run pytest tests/ui/test_uuid_fastdatatable.py -v
# 8 passed

[Maxteabag]

Thanks for the PR, Raj!