Distinguish different errors of wifi QR code

When failure occurs after scanning wifi QR code, only "Check connection
and try again" will show, which is confusing for user to understand the
errors and take next action.

Add more string resources to cover different errors.

Co-authored-by: Yufan Cao <Yufan.Cao@sony.com>

Flag: EXEMPT bugfix
Test: manual test
Bug: 362305039
Change-Id: I85145eb67eecdc3aa06bb7b8a7b3e7f0ffea1f62