In addition to recording the BindingPattern error, also record an
AsyncArrowFormalParameters error for shorthand property "await" in object
literals.

BUG=v8:4483, v8:5148
R=littledan@chromium.org, jwolfe@igalia.com, adamk@chromium.org, nikolaos@chromium.org

Review-Url: https://codereview.chromium.org/2100623002
Cr-Commit-Position: refs/heads/master@{#37302}