Revert of [simd.js] Disable SIMD polyfill.

test/simdjs/SimdJs.json

Index: test/simdjs/SimdJs.json
diff --git a/test/simdjs/SimdJs.json b/test/simdjs/SimdJs.json
index 3e5eea7501f3adc2aae60c45c98e138fed7a8b77..ae2a32e308c146290125fea1974de07b8c9b5792 100644
--- a/test/simdjs/SimdJs.json
+++ b/test/simdjs/SimdJs.json
@@ -9,6 +9,7 @@
   ],
   "resources": [
     "test/simdjs/data/src/benchmarks/base.js",
+    "test/simdjs/data/src/ecmascript_simd.js",
     "test/simdjs/harness-adapt.js",
     "test/simdjs/harness-finish.js",
     "test/simdjs/data/src/benchmarks/kernel-template.js",
@@ -241,4 +242,4 @@
   "timeout_arm": 240,
   "timeout_arm64": 120,
   "units": "ms"
-}
+}