fix failed test in test_ndarray.py

[vtavana]

The behavior of repr was modified in IntelPython/dpctl#2067.

Tests in dpnp should be modified to align with this new behavior.

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• Have you checked performance impact of proposed changes?
• Have you added documentation for your changes, if necessary?
• Have you added your changes to the changelog?

[github-actions]

View rendered docs @ https://intelpython.github.io/dpnp/index.html

[github-actions]

Array API standard conformance tests for dpnp=0.18.0dev1=py312he4f9c94_14 ran successfully.
Passed: 1222
Failed: 0
Skipped: 9

[antonwolfy]

Thank you @vtavana