deps: cherry-pick 6cb999b97b from V8 upstream

“This will not be merged to 5.9.” → I’m opening this cherry-pick.

Original commit message:

Properly handle loads from global interceptor via prototype chain.

... when receiver is in dictionary mode.

Bug: v8:6490
Change-Id: Ic5a8d214adcc4efd4cb163cbc6b351c4e6b596af
Reviewed-on: https://chromium-review.googlesource.com/559548
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46428}

Ref: https://chromium.googlesource.com/v8/v8.git/+/6cb999b97b7953ebfd4aabf2e1f62bf405f21c69 Fixes: https://github.com/nodejs/node/issues/13804

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

Affected core subsystem(s)

deps/v8