Test: `TestIpcMemory.test_ipc_handle` is flaky

[leofang]

https://github.com/NVIDIA/numba-cuda/actions/runs/24433250250/job/71381978923?pr=858#step:7:4363

________________________ TestIpcMemory.test_ipc_handle _________________________
[gw4] linux -- Python 3.10.19 /home/runner/_work/numba-cuda/numba-cuda/.pixi/envs/cu-12-0-py310/bin/python3.10

self = <numba.cuda.tests.cudapy.test_ipc.TestIpcMemory testMethod=test_ipc_handle>

    def test_ipc_handle(self):
        # prepare data for IPC
        arr = np.arange(10, dtype=np.intp)
        devarr = cuda.to_device(arr)
    
        # create IPC handle
        ctx = cuda.current_context()
        ipch = ctx.get_ipc_handle(devarr.gpu_data)
    
        # manually prepare for serialization as bytes
        handle_bytes = ipch.handle.reserved
        size = ipch.size
    
        # spawn new process for testing
        fut = self.exe.submit(
            base_ipc_handle_test, handle_bytes, size, parent_pid=os.getpid()
        )
        out = fut.result(timeout=FUTURE_TIMEOUT)
>       np.testing.assert_equal(arr, out)

numba_cuda/numba/cuda/tests/cudapy/test_ipc.py:104: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
.pixi/envs/cu-12-0-py310/lib/python3.10/site-packages/numpy/_utils/__init__.py:85: in wrapper
    return fun(*args, **kwargs)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

args = (<built-in function eq>, array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]), array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0]))
kwds = {'err_msg': '', 'header': 'Arrays are not equal', 'strict': False, 'verbose': True}

    @wraps(func)
    def inner(*args, **kwds):
        with self._recreate_cm():
>           return func(*args, **kwds)
E           AssertionError: 
E           Arrays are not equal
E           
E           Mismatched elements: 9 / 10 (90%)
E           Max absolute difference among violations: 9
E           Max relative difference among violations: inf
E            ACTUAL: array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
E            DESIRED: array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0])

.pixi/envs/cu-12-0-py310/lib/python3.10/contextlib.py:79: AssertionError