Revert "Fix flaky SyncConsentFragmentTest#testManagedAccount*"

This reverts commit 64dfed54.

Reason for revert: Tests are still flaky, must be a different cause... I was unable to repro locally.

Original change's description:
> Fix flaky SyncConsentFragmentTest#testManagedAccount*
>
> Flakiness caused by espresso 3.2. Need to look for the view in the
> dialog's root.
>
> Bug: 330570364
> Change-Id: Ifdff3b7bc8c8f9aac54e15c0e92c7f4129b288d8
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5383936


> Auto-Submit: Michael Thiessen <mthiesse@chromium.org>
> Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
> Commit-Queue: Boris Sazonov <bsazonov@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1276834}

Bug: 330570364
Change-Id: Id0f087f3d3e48eece4a0074e9b3ecb1fdc3df0e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5386694
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1277052}