Import exceptions directly from dpnp.exceptions module

[antonwolfy]

This PR updates the code to consistently use the dpnp.exceptions module as the single source of the exceptions where it's applicable.

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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=0.20.0dev3=py313h509198e_15 ran successfully.
Passed: 1354
Failed: 3
Skipped: 16

[coveralls]

coverage: 81.17% (+0.003%) from 81.167%
when pulling 883205e on use-axis-error-exception-from-appropriate-module
into 2c86497 on master.

[vlad-perevezentsev]

LGTM
Thank you @antonwolfy !