Reland "Reland "[Ad Privacy] Init ROW notice with filler dropdown content""

See go/row-notice-v3 for more details.

UTR test on initial failing tablet (100 iterations): https://ci.chromium.org/ui/inv/u-alvingo-2025-04-02-21-31-00-554a223fc7b4ec72/test-results?sortby=&groupby=

Screencast: https://screencast.googleplex.com/cast/NTUxODM5NjUyMjIzMzg1Nnw3YjMwNzUzZC0wNw

Bug: 405848876

This is a reland of commit 2b2f80ac4069454184a7688c4999b860687d9fe1

Original change's description:
> Reland "[Ad Privacy] Init ROW notice with filler dropdown content"
>
> This is a reland of commit 578ea8f8f8a8e7d31472efd6c66c13154539896b
>
> Root cause: The check to see if we've reached the bottom of the scrollview was only ran once on the dialog's `onShow` method. We did not have a way to update the button visibility on new renders which meant we were displaying stale button states. In the case of the failing tests we  initially calculated that the scrollview was scroll-able and displayed the more button. After the initial calculation new render occurred (with no re-calculation), this 2nd render had resized the scroll view such that we could not scroll anymore. We were then left in a state where the more button was shown (and would no-op when clicked since we cannot scroll) with the action buttons not being displayed meaning the user would be stuck on the screen.
>
> The fix: Updated the logic to listen on global layout updates which will now re-run calculations every time a layout change occurs. This also has the benefit of updating the button visibility when screen orientation changes which was a missing feature of existing dialogs. We also won't need to override `onShow` anymore as the initial render will be caught via `global layout` update.
>
> Screenshot before: https://screenshot.googleplex.com/8sJprruUZKNf6mE
> New look screenshot : https://screenshot.googleplex.com/BYUYNY2nu32gSib (Horizontal)
> https://screenshot.googleplex.com/Bcym7yaUqtRSSfW (Vertical)
>
> Remote run of the failing trybot: https://ci.chromium.org/ui/inv/u-alvingo-2025-03-27-20-45-00-f2149c619984ebb2/test-results?sortby=&groupby=
>
> Manually adding tablet try bots as well for test coverage.
>
> Original change's description:
> > [Ad Privacy] Init ROW notice with filler dropdown content
> >
> > A CL to populate the dropdown content will follow (not adding it in this CL since it'll be large).
> >
> > We're also generalizing the naming for some existing content such as dimens and logo files.
> >
> > Mocks: https://www.figma.com/design/vCs8M3DS3WqPUdeYN4hjA5/%5BNTK%5D-Ad-Privacy-Narrative?node-id=14702-17410&p=f&t=XgDHU2PzQyG41ia9-0
> >
> > Light Mode Screenshots:
> > On load: https://screenshot.googleplex.com/4KFaBuRwZyWrpjL
> > Action buttons: https://screenshot.googleplex.com/5jsNr7XZznefUZW
> > Sticky action buttons: https://screenshot.googleplex.com/BCSBJZ3252A2PND
> >
> > Dark Mode Screenshots:
> > On load: https://screenshot.googleplex.com/96cdWAUQTH8Xw92
> > Action buttons: https://screenshot.googleplex.com/7MWGVE6D6dQ6SLG
> > Sticky action buttons: https://screenshot.googleplex.com/AvjU2AavMiKCUqr
> >
> >
> > Bug: 392943234
> > Change-Id: I7dcfa2786e99548c9337af2356577d36924c2ee7
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6368284
> > Commit-Queue: Alvin Lam <alvingo@google.com>
> > Reviewed-by: Abe Boujane <boujane@google.com>
> > Reviewed-by: Aashna Sheth <aashnas@google.com>
> > Reviewed-by: Jacob Stanley <jacobstanley@google.com>
> > Cr-Commit-Position: refs/heads/main@{#1436158}
>
> Bug: 392943234, 405848876
> Change-Id: Ida4142438ca5d513faaa8b4fa5644291408e6266
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6387637
> Reviewed-by: Jacob Stanley <jacobstanley@google.com>
> Commit-Queue: Jacob Stanley <jacobstanley@google.com>
> Reviewed-by: Kevin Graney <kmg@google.com>
> Cr-Commit-Position: refs/heads/main@{#1439404}

Bug: 392943234, 405848876
Change-Id: I1573055f6640cf726df133152c3a679071538ae3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6409432
Feels: Aashna Sheth <aashnas@google.com>
Feels: Alvin Lam <alvingo@google.com>
Reviewed-by: Kevin Graney <kmg@google.com>
Reviewed-by: Jacob Stanley <jacobstanley@google.com>
Commit-Queue: Alvin Lam <alvingo@google.com>
Cr-Commit-Position: refs/heads/main@{#1443595}