Login sso: handle failure

vector/src/main/java/im/vector/riotx/features/login/LoginViewModel.kt

@@ -134,6 +134,10 @@ class LoginViewModel @AssistedInject constructor(@Assisted initialState: LoginVi
                 override fun onSuccess(data: Session) {
                     onSessionCreated(data)
                 }
+
+                override fun onFailure(failure: Throwable) = setState {
+                    copy(asyncLoginAction = Fail(failure))
+                }
             })
         }
     }