p13n: rtl fix for recent menu button

before: https://screenshot.googleplex.com/8Ce6fwPcHAsAiSS
after: https://screenshot.googleplex.com/AdfNBbPUT4ytkmv

BUG=b:330765251
TEST=Manually

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Change-Id: Iddedb20eebcbbd6a2d34a2a1657f335c0a5c80a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5384984


Reviewed-by: Jerry Liu <pzliu@google.com>
Commit-Queue: Jason Thai <jasontt@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1276601}