Re-evaluate marking bits of a descriptor array when it gets replaced.

BUG=340254
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/179733004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@19546 ce2b1a6d-e550-0410-aec6-3dcde31c8c00