Fix wrapped-normal input edge cases

[FlorianPfaff]

Summary

• normalize hypertoroidal wrapped-normal query points before checking shape, so Python sequences and scalar 1-D queries are accepted consistently
• coerce hypertoroidal and circular shift() inputs before inspecting .shape
• stop the circular wrapped-normal JAX PDF loop based on the latest wrapped contribution instead of accumulated density changes
• add regression tests for sequence/scalar inputs and scalar shifts

Validation

• connector diff check: branch is 4 commits ahead of main, 0 behind, with changes limited to the two wrapped-normal implementations and their tests

Note: I could not run the full local test suite in this sandbox because direct GitHub checkout failed due DNS resolution, so validation was limited to connector diff inspection.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	25.89s
✅ PYTHON	black	4	1	0	0	1.66s
✅ PYTHON	isort	4	1	0	0	0.49s
✅ REPOSITORY	checkov	yes		no	no	28.12s
✅ REPOSITORY	gitleaks	yes		no	no	9.8s
✅ REPOSITORY	git_diff	yes		no	no	0.25s
✅ REPOSITORY	secretlint	yes		no	no	9.23s
✅ REPOSITORY	syft	yes		no	no	5.42s
✅ REPOSITORY	trivy-sbom	yes		no	no	2.83s
✅ REPOSITORY	trufflehog	yes		no	no	13.71s

Notices

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