Bug 1749253 [wpt PR 32303] - Revert "Fix fundamental compositing issue for scrollers...

Bug 1749253 [wpt PR 32303] - Revert "Fix fundamental compositing issue for scrollers without overlay controls", a=testonly

Automatic update from web-platform-tests
Revert "Fix fundamental compositing issue for scrollers without overlay controls"

This reverts commit 8714c34b3b8f10bbcc6cf977299bc7619f814f82.

Reason for revert: Failing tests on MAC, see https://crbug.com/1285772

Original change's description:
> Fix fundamental compositing issue for scrollers without overlay controls
>
> Now don't force self-painting PaintLayers for such scrollers. They
> still create PaintLayers required by PaintLayerScrollableArea.
>
> Bug: 370604
> Change-Id: Id9bc17b17a2a9bd3c92a5b74b43edf62fc9eb3b9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3359388
> Reviewed-by: Philip Rogers <pdr@chromium.org>
> Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#956934}

Bug: 370604,1285772
Change-Id: I60c62287b20b91abac1fe38ea71539b497a34579
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3376063
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Antonio Sartori <antoniosartori@chromium.org>
Commit-Queue: Antonio Sartori <antoniosartori@chromium.org>
Cr-Commit-Position: refs/heads/main@{#956979}

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wpt-commits: f0d573917511326335d59ca8f1fca9262d21777c
wpt-pr: 32303