[UNOp2][Android] Add landscape layout for history sync

This CL also fixes some small padding issues in the signin FRE landscape
layout.

Screenshots: http://b/41493766#comment9

Bug: b/41493766
Change-Id: I591a9d6de6f38da6b55ff73cdeb16b01d9963b2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5310399


Reviewed-by: Tanmoy Mollik <triploblastic@google.com>
Auto-Submit: Samar Chehade-Lepleux <samarchehade@google.com>
Commit-Queue: Samar Chehade-Lepleux <samarchehade@google.com>
Cr-Commit-Position: refs/heads/main@{#1265931}