https://html.spec.whatwg.org/multipage/history.html#the-location-interface
HTML Location platform objects need to be initialized with using
the %ObjProto_valueOf% intrinsic object.

This patch exposes the %ObjProto_valueOf% intrinsic object to
embedders.

Example usage is: https://crrev.com/c/2102306

Change-Id: Iec58135773e01aed5de330c0c5dea89a49835a52
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2102408Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66747}