Extra flag check for sse4_1

Fuzzers use a slight variant of the sse4_1 flag, see
https://source.chromium.org/chromium/chromium/src/+/master:v8/tools/testrunner/testproc/fuzzer.py;l=26;drc=9491d5eaa4e764721b5269e75af68f181bef09cf.

Bug: v8:10863
Change-Id: Ifc467644f00a4f10776794c12a227f13774f48ca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2387555Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69652}

tools/testrunner/base_runner.py

@@ -709,7 +709,8 @@ class BaseTestRunner(object):
       "verify_csa": self.build_config.verify_csa,
       "lite_mode": self.build_config.lite_mode,
       "pointer_compression": self.build_config.pointer_compression,
-      "nosse41": "--noenable-sse4-1" in options.extra_flags,
+      "nosse41": "--no-enable-sse4_1" in options.extra_flags or
+        "--noenable-sse4-1" in options.extra_flags
     }
 
   def _runner_flags(self):