Lacros browser test for PWA App info from Shelf

Test that for a PWA with a file handler, App info from the Shelf context menu
launches the Settings SWA.

Bug: 1315958
Change-Id: I5511aa47be890841629ff804a191105adc4f76c8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3664168


Reviewed-by: Alan Cutter <alancutter@chromium.org>
Auto-Submit: Eric Willigers <ericwilligers@chromium.org>
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1012848}