Also changes CreateObjectLiteral to take the boilerplate as a constant
value, not a node.

Bug: v8:7700
Change-Id: I6852c7c4b8d361f903155c513e627ebc1af4d2f6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3758223
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81687}