Fix dpnp.ndarray constructor call with buffer passed as data property

[antonwolfy]

The PR closes gh-2532.

In the faulty example the buffer was passed with .data of dpnp.ndarray. In that case there is no need to cast dpctl's usm_data to DPNP memory object.

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[github-actions]

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

[github-actions]

Array API standard conformance tests for dpnp=0.19.0dev1=py313h509198e_18 ran successfully.
Passed: 1227
Failed: 0
Skipped: 9

[coveralls]

coverage: 72.095% (+0.003%) from 72.092%
when pulling d507e20 on resolve-gh-2532
into 81870b7 on master.

[vtavana]

Thank you, @antonwolfy!