[antonwolfy]

Description

Three tracked files were stored with CRLF line endings, while every other file in the repository uses LF:

• conda-recipe-cf/conda_build_config.yaml
• conda-recipe/conda_build_config.yaml
• mkl_fft/_init_helper.py

The current .gitattributes only sets *.sh text eol=lf. This PR replaces it with the rule that dpnp uses, which also covers shell scripts:

* text=auto eol=lf

It stores all text files with LF and checks them out with LF, .bat files included, as in dpnp. The files above are renormalized with git add --renormalize .. Their contents don't change: git diff --ignore-cr-at-eol shows only .gitattributes. The same change is proposed in IntelPython/mkl_random#203 and IntelPython/dpctl#2396.

Verification

• Tests: not run; no code changes.
• Lint: pre-commit run --files on the changed files, Linux (WSL): all hooks passed.

Not verified

CI, including Windows checkouts.

Checklist

• NumPy/SciPy FFT API compatibility preserved, or the break is intentional and called out above.
• Behavior changes have tests in mkl_fft/tests/; bug fixes have a regression test.
• CHANGELOG.md updated under ## [dev] with a [gh-NNN] link, or the change isn't user-visible.