This introduces a new, optional `nonIndexedPropertiesOnly` flag to the
`Runtime.getProperties` inspector request, which tells the inspector to
only report properties whose name is not an (typed) array index. This is
to support retrieving all properties except for the indexed ones when
the DevTools front-end decides to use the array bucketing mechanism.
Previously the DevTools front-end had some quite complicated logic in
place to simulate this via injected JavaScript, but that logic didn't
pick up internal properties and was also interfering with the inherited
accessor mechanism. With this new flag, it's straight-forward to
implement the correct behavior in the DevTools front-end.

The corresponding devtools-frontend CL is https://crrev.com/c/3099011.

Before: https://imgur.com/hMX6vaV.png
After: https://imgur.com/MGgiuJQ.png
Bug: chromium:1199701
Change-Id: Iacbe9756ed8a2e6982efaebe1e7c606d37c05379
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3099686
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Philip Pfaffe <pfaffe@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76360}