[JAX] Bug fix for distributed normalization

[phu0ngng]

Description

• Added CudnnHandlerInit into the prepare phases of normalization custom calls.
• Make NormalizationPlanRegistry thread_local.

These changes should fix the failures in test_distributed_layernorm.py.

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refractor

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[phu0ngng]

/te-ci jax L1

[zlsh80826]

LGTM!