### What this PR does / why we need it?
- Replace local logging with vllm.logger for consistency
- Add info log when enable_npugraph_ex is enabled
- Add info log when enable_static_kernel is enabled
- Unify logging message format to use config switch names consistently
- This helps users understand which compilation optimizations are active
### Does this PR introduce _any_ user-facing change?
Yes. Users will now see informational log messages when
enable_npugraph_ex or enable_static_kernel features are enabled,
providing better visibility into the compilation optimization settings
being used.
### How was this patch tested?
- Code passes all pre-commit hooks (ruff check, ruff format, codespell,
typos)
- Follows project coding conventions and style guidelines
- Logger import matches the pattern used elsewhere in the codebase
Signed-off-by: p00465316 <panchao13@huawei.com>
Co-authored-by: p00465316 <panchao13@huawei.com>
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