Fix raw PyTorch clip under non-PyTorch backends

[FlorianPfaff]

Summary

• Patch pyrecest.backend_support so raw pyrecest._backend.pytorch.clip accepts NumPy-style array-like inputs even when the active public backend is not PyTorch.
• Preserve a_min/a_max, min/max, and out= handling while updating the active public PyTorch facade when applicable.
• Add a subprocess regression test for PYRECEST_BACKEND=numpy with direct raw PyTorch clip access.

Bug fixed

With the default/NumPy public backend, importing pyrecest did not apply the PyTorch clip wrapper because the existing facade patch returns early unless PYRECEST_BACKEND=pytorch. Direct calls such as pyrecest._backend.pytorch.clip([-2.0, 0.5, 3.0], -1.0, 2.0) therefore reached torch.clip with a Python list and failed before backend conversion.

Testing

• Added tests/backend_support/test_pytorch_clip_default_backend.py.
• Sanity-checked the wrapper behavior locally against the installed torch package; full repository tests were not run in this connector session.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	74.45s
✅ JSON	prettier	7	0	0	0	1.04s
✅ JSON	v8r	7		0	0	5.27s
✅ MARKDOWN	markdownlint	68	0	0	0	2.06s
✅ MARKDOWN	markdown-table-formatter	68	0	0	0	0.71s
✅ PYTHON	black	1126	10	0	0	61.69s
✅ PYTHON	isort	1126	15	0	0	2.97s
✅ REPOSITORY	checkov	yes		no	no	48.53s
✅ REPOSITORY	gitleaks	yes		no	no	11.45s
✅ REPOSITORY	git_diff	yes		no	no	0.1s
✅ REPOSITORY	secretlint	yes		no	no	42.28s
✅ REPOSITORY	syft	yes		no	no	4.66s
✅ REPOSITORY	trivy-sbom	yes		no	no	7.6s
✅ REPOSITORY	trufflehog	yes		no	no	17.59s
✅ YAML	prettier	11	0	0	0	0.82s
✅ YAML	v8r	11		0	0	12.18s
✅ YAML	yamllint	11		0	0	0.67s

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