[Core][AMD] Add AMD Instinct MI350 and MI355 products

[vickytsang]

Supporting new AMD Instinct products

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• Testing Strategy
  • [ x] Unit tests
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  • This PR is not tested :(

[gemini-code-assist]

Code Review

This pull request adds support for the new AMD Instinct MI350 and MI355 series GPUs by updating the device ID mappings and adding corresponding accelerator type constants. The changes are straightforward, but I found an inconsistency in the naming of the AMD_INSTINCT_MI350x constant that would prevent it from working correctly. My review includes a suggestion to fix this and to add unit tests to prevent similar issues in the future.

[gemini-code-assist]

There's an inconsistency in the accelerator type string for AMD_INSTINCT_MI350x. The value should include the -OAM suffix to match the product name defined in python/ray/_private/accelerators/amd_gpu.py ("AMD-Instinct-MI350X-OAM").

Without this change, ray.resource_spec(accelerator_type=ray.util.accelerators.AMD_INSTINCT_MI350x) would not correctly match nodes equipped with this GPU, as the node's accelerator type would be reported as "AMD-Instinct-MI350X-OAM".

To prevent such issues in the future, it would be beneficial to add a unit test for the new accelerator types, similar to test_visible_amd_gpu_type in test_amd_gpu.py, to verify that the constants defined here match the types returned by AMDGPUAcceleratorManager.

Suggested change

	AMD_INSTINCT_MI350x = "AMD-Instinct-MI350X"
	AMD_INSTINCT_MI350x = "AMD-Instinct-MI350X-OAM"