[Privacy Sandbox] Add icons to privacy sandbox settings page and row

Preview: https://crbug.com/1378703#c58

Bug: 1378703, b/254414194
Change-Id: I57dd16fe5377c2e3ef649ca861c3ed8440370977
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4047867


Reviewed-by: Olesia Marukhno <olesiamarukhno@google.com>
Commit-Queue: Gabriel Oliveira <gabolvr@google.com>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1076500}