disable creation and enabling of e2ee if remote preference for disabling it is true

ElementX/Sources/Application/Settings/AppSettings.swift

@@ -24,6 +24,7 @@ nonisolated protocol CommonSettingsProtocol: AnyObject, Sendable {
     var traceLogPacks: Set<TraceLogPack> { get }
     var bugReportRageshakeURL: RemotePreference<RageshakeConfiguration> { get }
     var contentScannerURL: RemotePreference<URL?> { get }
+    var forceDisableE2EE: RemotePreference<Bool> { get }
     
     var enableOnlySignedDeviceIsolationMode: Bool { get }
     var threadsEnabled: Bool { get }
@@ -272,6 +273,12 @@ final nonisolated class AppSettings: @unchecked Sendable {
     /// `nil` when content scanning is disabled.
     let contentScannerURL: RemotePreference<URL?> = .init(nil)
     
+    // MARK: - Encryption
+    
+    /// Whether the server forbids the use of E2EE: new rooms are created unencrypted and
+    /// enabling encryption on existing rooms is not offered.
+    let forceDisableE2EE: RemotePreference<Bool> = .init(false)
+    
     // MARK: - Analytics
     
     /// The configuration to use for analytics. Set to `nil` to disable analytics.