Skip two tests temporarily to prepare for ICU roll

Rolling ICU to include the following CLs will make the two tests
below pass unexpectedly.
   https://chromium-review.googlesource.com/c/chromium/deps/icu/+/1026797

   intl402/language-tags-canonicalized.js
   intl402/Intl/preferred-variants.js

Mark them as skipped for now. Will remove from the status file when
the following v8 CL is submitted after ICU is rolled.

 https://chromium-review.googlesource.com/c/v8/v8/+/1023379

Bug: v8:7669, v8:5693
Test: The above tests
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Change-Id: Iae2ab0076b3dfcf45b8940c0d294cb3371463654
Reviewed-on: https://chromium-review.googlesource.com/1028655Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52797}

test/test262/test262.status

@@ -439,7 +439,7 @@
   'intl402/NumberFormat/currency-digits': [FAIL],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=7473
-  'intl402/language-tags-canonicalized': [FAIL],
+  'intl402/language-tags-canonicalized': [SKIP],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=7474
   'intl402/NumberFormat/prototype/format/format-fraction-digits': [FAIL],
@@ -465,7 +465,7 @@
   # https://bugs.chromium.org/p/v8/issues/detail?id=5012
   'intl402/Intl/getCanonicalLocales/canonicalized-tags': [FAIL],
   'intl402/Intl/getCanonicalLocales/preferred-grandfathered': [FAIL],
-  'intl402/Intl/getCanonicalLocales/preferred-variant': [FAIL],
+  'intl402/Intl/getCanonicalLocales/preferred-variant': [SKIP],
 
   # https://bugs.chromium.org/p/v8/issues/detail?id=7513
   'built-ins/TypedArrays/ctors/buffer-arg/buffer-arg-bufferbyteoffset-throws-from-modulo-element-size': [FAIL],