Sign out: handle no network error.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/encryption/BackupUploadState.kt

@@ -34,4 +34,6 @@ sealed interface BackupUploadState {
     data object Done : BackupUploadState
 
     data object Error : BackupUploadState
+
+    data class SteadyException(val exception: SteadyStateException) : BackupUploadState
 }

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/encryption/SteadyStateException.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.libraries.matrix.api.encryption
+
+sealed interface SteadyStateException {
+    /**
+     * The backup can be deleted.
+     */
+    data class BackupDisabled(val message: String) : SteadyStateException
+
+    /**
+     * The task waiting for notifications coming from the upload task can fall behind so much that it lost some notifications.
+     */
+    data class Lagged(val message: String) : SteadyStateException
+
+    /**
+     * The request(s) to upload the room keys failed.
+     */
+    data class Connection(val message: String) : SteadyStateException
+}