fix(ui): Invalid connect URL if KERIA is down (#1467)
* feat(ui): handle network issue * feat(ui): check network error by isNetworkError func * feat(ui): update error message * feat(ui): fix UT * feat(ui): update error message * feat(ui): update catch * feat(ui): update error message for ssi agent screen * feat(ui): remove toast --------- Co-authored-by: Sotatek-DukeVu <[email protected]>