arc: net: Add additional dialog for subscription expiring in <1 year

Pass subscription's expiration time and friendly name to the Passpoint
dialog. SizeToFit(...) is necessary to be called as there is a bug for
BoxLayout that requires the children's height to be specified. See also
http://crbug.com/682266.

See also: go/cros-passpoint-ux
Screenshot: https://screenshot.googleplex.com/ASvVEvdxTkh59A2

BUG=b:276387350
TEST=tast run <DUT> wifi.PasspointARCDialog.*; (with expiration date
     less than 1 year and with undefined expiry date);
     observe that the additional dialog is shown correctly;
TEST=out/Default/ash_components_unittests --gtest_filter="*Passpoint*";

Change-Id: Ic8b7c5b6fb30f991f62f4f6b90c78566bf11c619
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4393588
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Hugo Benichi <hugobenichi@google.com>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Jason Iman <jasongustaman@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1128154}