- Add function docstrings to all test functions and helper functions
in dremio_catalog_test.go, dremio_crud_operations_test.go, and
dremio_deterministic_location_test.go to improve code documentation
and satisfy CodeRabbit's docstring coverage requirements.
- Make Dremio Docker image pre-pull non-critical in CI workflow.
The pre-pull was failing with access denied error, but the image
can still be pulled at runtime. Using continue-on-error to allow
tests to proceed.