fix(fp8_quant test): pass htexp_device_type to the unexpected-device error message

[Anai-Guo]

Problem

test/torch/algorithms/fp8_quant/test_hpu_utils.py:49 formats an error message with a {} placeholder but passes no argument:

def htexp_device_type_to_inc_acclerator_type(htexp_device_type):
    if htexp_device_type == get_gaudi2_type():
        return INCAcceleratorType.GAUDI2
    elif htexp_device_type == get_gaudi3_type():
        return INCAcceleratorType.GAUDI3
    else:
        raise ValueError("Unexpected htexp_device_type {} ".format())   # <-- no argument

str.format() with a positional {} and no arguments raises before the ValueError is ever constructed:

IndexError: Replacement index 0 out of range for positional args tuple

So on an unrecognised Gaudi device the helper — used by unit_tests/test_functions/test_config_json.py via device_type_id[device_type] — fails with an unrelated IndexError and no indication of which device type was unexpected, which is exactly the information the message exists to provide.

Fix

Pass the value the placeholder is for:

        raise ValueError("Unexpected htexp_device_type {} ".format(htexp_device_type))

One line. The trailing space in the literal is left as-is to keep the diff to the argument only.

Verification

I don't have Gaudi hardware, so habana_frameworks won't import here and the module can't be executed directly. The failure is in str.format itself and is independent of the HPU stack — the literal from the file, reproduced verbatim:

>>> "Unexpected htexp_device_type {} ".format()
Traceback (most recent call last):
IndexError: Replacement index 0 out of range for positional args tuple
>>> "Unexpected htexp_device_type {} ".format("synDeviceGaudi")
'Unexpected htexp_device_type synDeviceGaudi '

Formatting checked against the repo's pinned hook (black==26.5.1, line-length = 120 from pyproject.toml): the patched file is left unchanged (the new line is 86 chars).

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