fix: remote exception deserialization

[badayvedat]

fix CLI output for remote exceptions whose classes are not importable locally.

Problem

When isolate cannot deserialize a remote exception, it raises ExceptionDeserializationError. That error preserves original_traceback.

The traceback object has the remote frames, but not the final exception line:

huggingface_hub.errors.LocalEntryNotFoundError: error

That line only exists in SerializedObject.stringized_traceback.

sdk.py is the last place where both values are available at the same time:

• ExceptionDeserializationError.original_traceback, raised by isolate
• SerializedObject.stringized_traceback, still available on the proto being converted

After from_grpc(message.return_value) raises, the proto is no longer available to the API or CLI layers. If the SDK lets isolate’s error pass through unchanged, the CLI can still render the remote frames,
but it cannot recover the remote exception type/message. It would have to label the traceback as generic Exception.

So the SDK wraps only this error case and carries stringized_traceback forward in the exception chain.

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[badayvedat]

@efiop since we import a type introduced in latest version of isolate, we also need to update isolate version bounds too? do you prefer having it in the same PR or another one

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[badayvedat]

@codex review

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