[Array API] Changes for adding arrayAPI to KMeans.

[KateBlueSky]

Changes for adding arrayAPI to KMeans.

Added arrayAPI get_namespace and types to the KMeans code. Depends on PR #2640

Checklist to comply with before moving PR from draft:

PR completeness and readability

• I have reviewed my changes thoroughly before submitting this pull request.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes or created a separate PR with update and provided its number in the description, if necessary.
• Git commit message contains an appropriate signed-off-by string (see CONTRIBUTING.md for details).
• I have added a respective label(s) to PR if I have a permission for that.
• I have resolved any merge conflicts that might occur with the base branch.

Testing

• I have run it locally and tested the changes extensively.
• All CI jobs are green or I have provided justification why they aren't.
• I have extended testing suite if new functionality was introduced in this PR.

Performance

• I have measured performance for affected algorithms using scikit-learn_bench and provided at least summary table with measured data, if performance change is expected.
• I have provided justification why performance has changed or why changes are not expected.
• I have provided justification why quality metrics have changed or why changes are not expected.
• I have extended benchmarking suite and provided corresponding scikit-learn_bench PR if new measurable functionality was introduced in this PR.

[KateBlueSky]

/intelci: run

[codecov]

Codecov Report

❌ Patch coverage is 58.82353% with 7 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
onedal/cluster/kmeans.py	50.00%	5 Missing and 2 partials ⚠️

Flag	Coverage Δ
azure	80.64% <52.94%> (-0.07%)	⬇️
github	73.18% <58.82%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
sklearnex/cluster/k_means.py	89.93% <100.00%> (+0.20%)	⬆️
onedal/cluster/kmeans.py	77.67% <50.00%> (-1.30%)	⬇️

... and 1 file with indirect coverage changes

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[KateBlueSky]

/intelci: run

[KateBlueSky]

/intelci: run