Fix PyTorch comparison device contract

[FlorianPfaff]

Summary

• Extend the PyTorch backend support device-placement hook to cover greater, less, and logical_or.
• Prefer an existing non-CPU tensor device before delegating to the underlying helper, matching the existing logical/equality device contract behavior.
• Keep raw PyTorch backend and active public PyTorch backend helpers synchronized when the patch is applied.

Bug fixed

The package initializer already wrapped greater, less, and logical_or, but that wrapper picked the first tensor operand's device. Calls with a CPU tensor on the left and a CUDA/meta tensor on the right could therefore try to move the right operand back to CPU or evaluate mixed-device operands, unlike the newer backend-support hooks that prefer existing non-CPU devices.

Validation

• Syntax-checked the updated module content locally with py_compile.
• Smoke-checked the device-selection wrapper logic locally with PyTorch CPU-left/meta-right operands for greater, less, and logical_or.
• Full suite not run in this environment because direct repository cloning is unavailable.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	79.59s
✅ JSON	prettier	7	0	0	0	0.97s
✅ JSON	v8r	7		0	0	5.46s
✅ MARKDOWN	markdownlint	68	0	0	0	1.81s
✅ MARKDOWN	markdown-table-formatter	68	0	0	0	0.78s
✅ PYTHON	black	1183	29	0	0	69.1s
✅ PYTHON	isort	1183	51	0	0	5.45s
✅ REPOSITORY	checkov	yes		no	no	52.81s
✅ REPOSITORY	gitleaks	yes		no	no	9.91s
✅ REPOSITORY	git_diff	yes		no	no	0.28s
✅ REPOSITORY	secretlint	yes		no	no	40.33s
✅ REPOSITORY	syft	yes		no	no	4.69s
✅ REPOSITORY	trivy-sbom	yes		no	no	9.84s
✅ REPOSITORY	trufflehog	yes		no	no	21.07s
✅ YAML	prettier	11	0	0	0	0.77s
✅ YAML	v8r	11		0	0	12.94s
✅ YAML	yamllint	11		0	0	0.57s

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