[iOS][MICE] Add sign-in error screen to MICE bottomsheet.

Adds an error screen that displays a message to redirect the user to
sign-in if there was an authentication issue.

Screenshots:
https://drive.google.com/file/d/1xfg6nciqdWf1FYvnOaNaugfYLuwN4Uuw
https://drive.google.com/file/d/1YfAWvZpHW4BMWnLHuneIj8eEop0twNXf

Bug: 1151288
Change-Id: I8691c0f3e2b8dae7cf7e4a9b8c989c3957d4bf5f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2846973


Commit-Queue: Nohemi Fernandez <fernandex@chromium.org>
Reviewed-by: Jérôme Lebel <jlebel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#876961}