[a11y]: this reverts three patches that lead to renderer crashes

Specifically these patches:
https://chromium-review.googlesource.com/c/chromium/src/+/5370683
https://chromium-review.googlesource.com/c/chromium/src/+/5388968
https://chromium-review.googlesource.com/c/chromium/src/+/5468155

Bug: 335553723
Change-Id: I3c6e65290021dd8f732b7175b9625cb72fbb1ef0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5484367


Reviewed-by: Tzarial Kuznia <zork@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Benjamin Beaudry <benjamin.beaudry@microsoft.com>
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1291985}