[test] don't use Intl.Collator in non-Intl regression test

Unskip test which failed with Intl support disabled, and avoid using Intl
objects within the test.

BUG=chromium:634273,chromium:634357,v8:5162
NOTRY=true
R=mstarzinger@chromium.org

Review-Url: https://codereview.chromium.org/2218743003
Cr-Commit-Position: refs/heads/master@{#38384}

test/mjsunit/es7/regress/regress-634357.js

@@ -11,4 +11,4 @@ Object.defineProperty(array, 1, {
     array[0] = -2147483648;
   }
 });
-result = array.includes(new Intl.Collator());
+result = array.includes(new Array());

test/mjsunit/mjsunit.status

@@ -213,9 +213,6 @@
   # desugaring regexp property class relies on ICU.
   'harmony/regexp-property-*': [PASS, ['no_i18n == True', FAIL]],
 
-  # TODO(caitp): Fail without i18n support.
-  'es7/regress/regress-634357': [PASS, ['no_i18n', SKIP]],
-
   # TODO(bmeurer): Flaky timeouts (sometimes <1s, sometimes >3m).
   'unicodelctest': [PASS, NO_VARIANTS],
   'unicodelctest-no-optimization': [PASS, NO_VARIANTS],