[typedarrays] sort in C++ for undefined comparefn

test/js-perf-test/JSTests.json

 {
   "name": "JSTests",
   "run_count": 3,
   "run_count_arm": 1,
   "run_count_arm64": 1,
   "timeout": 120,
   "units": "score",
   "total": true,
   "resources": ["base.js"],
   "tests": [
@@ skipping 265 matching lines @@
       ]
     },
     {
       "name": "TypedArrays",
       "path": ["TypedArrays"],
       "results_regexp": "^TypedArrays\\-%s\\(Score\\): (.+)$",
       "tests": [
         {
           "name": "CopyWithin",
           "main": "run.js",
-          "test_flags": ["typedarrays"]
+          "test_flags": ["copywithin"]
         },
         {
           "name": "Constructor",
           "main": "run.js",
           "test_flags": ["constructor"]
         },
         {
           "name": "Constructor--Future",
           "flags": ["--future"],
           "results_regexp": "^TypedArrays\\-Constructor\\(Score\\): (.+)$",
           "main": "run.js",
           "test_flags": ["constructor"]
+        },
+        {
+          "name": "Sort",
+          "main": "run.js",
+          "test_flags": ["sort"]
         }
       ]
     }
   ]
 }