Handle PRNG keys in reshard by using jax.device_put.
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The `reshard` function now treats `jax.Array` instances that are PRNG keys as non-reshardable via the experimental reshard sidechannel API, directing them through `jax.device_put` instead of the custom device-to-device transfer logic. This ensures correct handling of PRNG keys when resharding PyTrees. A new test case is added to confirm proper resharding of PyTrees containing random keys. PiperOrigin-RevId: 814746994
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Handle PRNG keys in
reshardby usingjax.device_put.The
reshardfunction now treatsjax.Arrayinstances that are PRNG keys as non-reshardable via the experimental reshard sidechannel API, directing them throughjax.device_putinstead of the custom device-to-device transfer logic. This ensures correct handling of PRNG keys when resharding PyTrees. A new test case is added to confirm proper resharding of PyTrees containing random keys.