Add regression test for v8:8866

Bug: v8:8866
Change-Id: I3a25c68fe4d8536596118352804daa3c6025da37
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1643466Reviewed-by: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Frank Tang <ftang@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62042}

test/intl/regress-8866.js

+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Regression test to ensure Intl.PluralRules respect minimumFractionDigits
+
+assertEquals('other',
+    new Intl.PluralRules("en", {minimumFractionDigits: 2}).select(1));
+
+assertEquals('zero',
+    new Intl.PluralRules("lv", {minimumFractionDigits: 2}).select(1.13));