feat(test): add unit test for the compression of se_atten (#5058)

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## Summary by CodeRabbit

* **Tests**
* Added a comprehensive test suite validating model compression parity
between original and compressed models across multiple configurations
(exclude-types, skip-neighbor-stat), boundary conditions (periodic,
non-periodic, large box), and frame/atomic-input scenarios. Includes
shape and numerical equality checks, ASE calculator comparisons for
energies/forces, and robust setup/teardown of artifacts for end-to-end
workflows.

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Signed-off-by: OutisLi <137472077+OutisLi@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: OutisLi