Destroyed large pages can be reallocated before the OS get a chance to
reclaim and clear them. In such cases we will get non-zero memory in a
newly allocated page.
Normal pages are not affected since they are kept in page pools instead
of being freed.
Fix by explicitly clearing the payload when destroying a large page.

Bug: chromium:1056170, chromium:1206274
Change-Id: I6436302f50b8f0b4ef41288425bf464b0eb52d5f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2874404
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74418}