Fix some array api test cases

[ndgrigorian]

This PR fixes an array API test case for logaddexp that fails for mixed nan and number operands.

It also applies a previous fix used for astype with order="K" to copy.

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[github-actions]

View rendered docs @ https://intelpython.github.io/dpctl/pulls/1328/index.html

[github-actions]

Array API standard conformance tests for dpctl=0.14.6dev0=py310h7bf5fec_111 ran successfully.
Passed: 911
Failed: 89
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.14.6dev0=py310h7bf5fec_112 ran successfully.
Passed: 912
Failed: 88
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.14.6dev0=py310h7bf5fec_113 ran successfully.
Passed: 912
Failed: 88
Skipped: 119

[oleksandr-pavlyk]

I have pushed a change to factor scalar implementation out and fixed it to ensure logaddexp(-inf,-inf)=-inf.

[github-actions]

Array API standard conformance tests for dpctl=0.14.6dev0=py310h7bf5fec_114 ran successfully.
Passed: 912
Failed: 88
Skipped: 119

[github-actions]

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