wasm64.test_sse4 has occasional timeout

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