wasm64.test_sse4 has occasional timeout

[sbc100]

This looks similar to what we were seeing for test_memorygrowth_linear_step (#22360)

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ERROR [0.003s]: test_sse4 (test_core.wasm64)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/unittest/case.py", line 59, in testPartExecutor
    yield
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/unittest/case.py", line 591, in run
    self._callTestMethod(testMethod)
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/unittest/case.py", line 549, in _callTestMethod
    method()
  File "/home/circleci/project/test/common.py", line 847, in resulting_test
    return func(self, *args)
  File "/home/circleci/project/test/test_core.py", line 58, in decorated
    f(self, *args, **kwargs)
  File "/home/circleci/project/test/common.py", line 242, in decorated
    return func(self, *args, **kwargs)
  File "/home/circleci/project/test/test_core.py", line 6555, in test_sse4
    self.do_runf(src, native_result)
  File "/home/circleci/project/test/common.py", line 1869, in do_runf
    return self._build_and_run(filename, expected_output, **kwargs)
  File "/home/circleci/project/test/common.py", line 1918, in _build_and_run
    js_output = self.run_js(js_file, engine, args,
  File "/home/circleci/project/test/common.py", line 1496, in run_js
    raise timeout_error
  File "/home/circleci/project/test/common.py", line 1465, in run_js
    jsrun.run_js(filename, engine, args,
  File "/home/circleci/project/test/jsrun.py", line 102, in run_js
    proc = subprocess.run(
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/subprocess.py", line 503, in run
    stdout, stderr = process.communicate(input, timeout=timeout)
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/subprocess.py", line 1152, in communicate
    stdout, stderr = self._communicate(input, endtime, timeout)
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/subprocess.py", line 2029, in _communicate
    self.wait(timeout=self._remaining_time(endtime))
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/subprocess.py", line 1207, in wait
    return self._wait(timeout=timeout)
  File "/home/circleci/.pyenv/versions/3.10.7/lib/python3.10/subprocess.py", line 1933, in _wait
    raise TimeoutExpired(self.args, timeout)
subprocess.TimeoutExpired: Command '['/home/circleci/node-v24.0.0-v8-canary202501036428a2737e-linux-x64/bin/node', '--stack-trace-limit=50', '--trace-uncaught', '/tmp/emtest_v_f9k7s_/emscripten_test_wasm64_tbfrpqlq/test_sse4_2.js']' timed out after 299.99996666399966 seconds