just @run_in_pyodide shoudl work with async

tests/test_compat.py

@@ -3,17 +3,21 @@
 
 """
 
-import pytest
 from pytest_pyodide import run_in_pyodide
 
-from micropip._compat import HttpStatusError, fetch_string_and_headers
 
+def test_404(selenium_standalone_micropip, httpserver):
+    @run_in_pyodide
+    async def _inner_test_404_raise(selenium, url):
+        import pytest
+
+        from micropip._compat import HttpStatusError, fetch_string_and_headers
+
+        with pytest.raises(HttpStatusError):
+            await fetch_string_and_headers(url, {})
 
-@pytest.mark.asyncio
-@run_in_pyodide
-async def test_404_raise(httpserver):
     httpserver.expect_request("/404").respond_with_data(
         "Not found", status=404, content_type="text/plain"
     )
-    with pytest.raises(HttpStatusError):
-        await fetch_string_and_headers(httpserver.url_for("/404"), {})
+    url_404 = httpserver.url_for("/404")
+    _inner_test_404_raise(selenium_standalone_micropip, url_404)