This state can be set on the NativeContext by the embedder. When a
PromiseReaction/PromiseReactionJobTask is constructed, store this
contextual state if present, and restore it while the reaction job
is running.

Change-Id: I141cdbd9e36ea83ce4a6bf08440ae7eaa54523df
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2005849Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Nate Chapin <japhet@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66617}