Manually Compute the Profile MenuItemView Accessible Name

MenuItemView only delegates accessible names when its title is empty
with a single container view. The Profile MenuItemView has a title and
multiple views. As a result, the accessible name must be manually
computed to account for the profile chip.

Fixed: 340660494
Change-Id: I2065dea9c951d9c9277ebca7fb4374cd53f5a515
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6787620
Reviewed-by: Allen Bauer <kylixrd@chromium.org>
Commit-Queue: Robert Liao <robliao@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1492356}