Fixes incorrect result when multiplying real array and complex scalar

[ndgrigorian]

Resolves #1219

Changes _resolve_weak_types to handle complex scalars properly and adds a test for the issue/fix.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/1220/index.html

[coveralls]

Coverage: 84.012%. Remained the same when pulling b03beb3 on multiply-scalar-gh-1219 into 521867b on master.

[github-actions]

Array API standard conformance tests for dpctl=0.14.3dev3=py310h7bf5fec_2 ran successfully.
Passed: 233
Failed: 767
Skipped: 116

[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=0.14.3dev3=py310h7bf5fec_6 ran successfully.
Passed: 258
Failed: 742
Skipped: 116

[oleksandr-pavlyk]

Thank you fixing this @ndgrigorian