Bugfix/gh 1874 result type

[oleksandr-pavlyk]

Closes gh-1874

If inputs consist solely of weak dtypes, pre-prepopulate dtypes lists with scalar behind the first weak_dtypes element.

Add tests that dpt.result_types(sc1, sc2) gives the same result regardless whether the scalar is a Python scalar (weak dtype), or corresponding NumPy scalar (strong dtype).

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[github-actions]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. 🤞

[github-actions]

Array API standard conformance tests for dpctl=0.19.0dev0=py310hdf72452_148 ran successfully.
Passed: 895
Failed: 0
Skipped: 119

[coveralls]

coverage: 87.676% (+0.003%) from 87.673%
when pulling dc1887e on bugfix/gh-1874-result_type
into 9eb8f03 on master.

[github-actions]

Array API standard conformance tests for dpctl=0.19.0dev0=py310hdf72452_151 ran successfully.
Passed: 894
Failed: 1
Skipped: 119

[ndgrigorian]

This LGTM, and array API is considering specifying that only scalar types are acceptable in result_type, so this is a subtle change toward supporting the next version of the spec.

[github-actions]

Array API standard conformance tests for dpctl=0.19.0dev0=py310hdf72452_152 ran successfully.
Passed: 895
Failed: 0
Skipped: 119

[vtavana]

Thank you, @oleksandr-pavlyk for fixing it.

[ndgrigorian]

Windows tests now passing, LGTM!