Fix backend meshgrid and JPDAF warning handling

[FlorianPfaff]

Summary

• coerce backend meshgrid axes for stricter JAX/PyTorch backends
• harden wrapped-normal and hypertoroidal wrapped-normal query/shift handling
• use Python built-in any for JPDAF warning checks while preserving backend array checks

Validation

• git diff --check
• rg -n "<<<<<<<|=======|>>>>>>>" src tests
• python -m py_compile src/pyrecest/_backend/__init__.py src/pyrecest/distributions/circle/wrapped_normal_distribution.py src/pyrecest/distributions/hypertorus/hypertoroidal_wrapped_normal_distribution.py src/pyrecest/filters/joint_probabilistic_data_association_filter.py tests/distributions/test_hypertoroidal_wrapped_normal_distribution.py tests/distributions/test_wrapped_normal_distribution.py tests/filters/test_joint_probabilistic_data_association_filter.py tests/test_backend_meshgrid_contract.py

Per request, I did not run the test suite.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	35.3s
✅ PYTHON	black	10	2	0	0	2.37s
✅ PYTHON	isort	10	3	0	0	0.57s
✅ REPOSITORY	checkov	yes		no	no	31.73s
✅ REPOSITORY	gitleaks	yes		no	no	16.84s
✅ REPOSITORY	git_diff	yes		no	no	0.06s
✅ REPOSITORY	secretlint	yes		no	no	13.9s
✅ REPOSITORY	syft	yes		no	no	2.24s
✅ REPOSITORY	trivy-sbom	yes		no	no	3.73s
✅ REPOSITORY	trufflehog	yes		no	no	22.77s

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