GitLab

* [CI] Modify test requirements and CI workflow

- Replaced `flash-attn` with `packaging` and `wheel` in `requirements-test.txt` to ensure proper package management.
- Updated the CI workflow to install `flash-attn` without build isolation, improving the installation process.

* [CI] remove redundant packages

* [CI] Update test requirements and CI workflow

- Added `flash-attn` to `requirements-test.txt` to ensure it is included in the testing environment.
- Modified the CI workflow to install packages from `requirements-test.txt` with `PIP_NO_BUILD_ISOLATION=1`, improving the installation process.