Support jax.random.PRNGKey serialization in Pathways Orbax handler.
#118
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Support
jax.random.PRNGKeyserialization in Pathways Orbax handler.This change allows
CloudPathwaysArrayHandlerto correctly save and restorejax.random.PRNGKeyobjects by extracting and wrapping the key data, and storing metadata about the key implementation using anArrayMetadataStore.This change introduces a dependency on Orbax's internal API.