Revert "[Views AX] Move accessibility strings to ui/"

This reverts commit 3b4c6a60319ab67b7ca3ebecef6f54447f296d75.

Reason for revert: The following bots have been failing consistently
https://ci.chromium.org/ui/p/chromium/builders/ci/fuchsia-arm64-cast-receiver-rel
https://ci.chromium.org/ui/p/chromium/builders/ci/fuchsia-x64-cast-receiver-dbg
https://ci.chromium.org/ui/p/chromium/builders/ci/fuchsia-x64-cast-receiver-rel
The timing of this change identifies it as a culprit.
Failing methods on fuchsia:
- BrowserAccessibility::GetStyleNameAttributeAsLocalizedString
- BrowserAccessibility::GetLocalizedStringForLandmarkType
- BrowserAccessibility::GetLocalizedStringForRoleDescription
I'm seeing some `#if !BUILDFLAG(IS_FUCHSIA)` directives that
seem related.

Original change's description:
> [Views AX] Move accessibility strings to ui/
>
> To ensure we don't break any layering rules in the move of
> BrowserAccessibility from content/ to ui/ these strings must be moved up
> so they are reachable from ui/
>
> Since this change simply moves strings around, and does not add any new ones, I will be bypassing the presubmit check to ensure that there are screenshots associated with each string.
>
> Bug: 40672441
> Change-Id: I4c17402259f7a59bd761cfc0bf020bbff31dae85
> Skip-Translation-Screenshots-Check: True
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5740105
> Commit-Queue: Jacques Newman <janewman@microsoft.com>
> Reviewed-by: Dirk Pranke <dpranke@google.com>
> Reviewed-by: Mark Schillaci <mschillaci@google.com>
> Reviewed-by: David Dorwin <ddorwin@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1340638}

No-Presubmit: true
Bug: 40672441
Change-Id: I139f9d31557cd40d4950503fed02545f070e49f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5783875
Commit-Queue: Jeremie Boulic <jboulic@chromium.org>
Owners-Override: Jeremie Boulic <jboulic@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Zijie He <zijiehe@google.com>
Auto-Submit: Jeremie Boulic <jboulic@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1340791}