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tt.atomic_poll crashes at runtime for 16-bit types #7390

Description

@wdziurdz

tt.atomic_poll (upstream 10723 added in upstream) crash for 16-bits.

Repro: test_atomic_poll[dtype0-16-*]

Skipped in: scripts/skiplist/*/language.txt

Need revert this commit to verify implementation: 03e3dbf

FAILED language/test_core.py::test_atomic_poll[dtype0-16-cta-relaxed] - worker 'gw0' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-cta-relaxed]'
FAILED language/test_core.py::test_atomic_poll[dtype0-16-cta-acquire] - worker 'gw2' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-cta-acquire]'
FAILED language/test_core.py::test_atomic_poll[dtype0-16-gpu-relaxed] - worker 'gw3' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-gpu-relaxed]'
FAILED language/test_core.py::test_atomic_poll[dtype0-16-gpu-acquire] - worker 'gw4' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-gpu-acquire]'
FAILED language/test_core.py::test_atomic_poll[dtype0-16-sys-relaxed] - worker 'gw5' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-sys-relaxed]'
FAILED language/test_core.py::test_atomic_poll[dtype0-16-sys-acquire] - worker 'gw6' crashed while running 'python/test/unit/language/test_core.py::test_atomic_poll[dtype0-16-sys-acquire]'

https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/28859016931/job/85594369933?pr=7351

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