Revert "refactor: Dialog BuildContext"

This reverts commit 315a43c1a4.

lib/widgets/chat_settings_popup_menu.dart

@@ -106,12 +106,12 @@ class ChatSettingsPopupMenuState extends State<ChatSettingsPopupMenu> {
             switch (choice) {
               case 'leave':
                 final confirmed = await showOkCancelAlertDialog(
+                  useRootNavigator: false,
                   context: context,
                   title: L10n.of(context)!.areYouSure,
                   okLabel: L10n.of(context)!.ok,
                   cancelLabel: L10n.of(context)!.cancel,
                   message: L10n.of(context)!.archiveRoomDescription,
-                  isDestructiveAction: true,
                 );
                 if (confirmed == OkCancelResult.ok) {
                   final success = await showFutureLoadingDialog(

lib/widgets/fluffy_chat_app.dart

@@ -52,10 +52,16 @@ class FluffyChatApp extends StatelessWidget {
         builder: (context, child) => AppLockWidget(
           pincode: pincode,
           clients: clients,
-          child: Matrix(
-            clients: clients,
-            store: store,
-            child: testWidget ?? child,
+          // Need a navigator above the Matrix widget for
+          // displaying dialogs
+          child: Navigator(
+            onGenerateRoute: (_) => MaterialPageRoute(
+              builder: (_) => Matrix(
+                clients: clients,
+                store: store,
+                child: testWidget ?? child,
+              ),
+            ),
           ),
         ),
       ),

lib/widgets/matrix.dart

@@ -71,8 +71,6 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
 
   BackgroundPush? backgroundPush;
 
-  late BuildContext navigatorContext;
-
   Client get client {
     if (widget.clients.isEmpty) {
       widget.clients.add(getLoginClient());
@@ -313,8 +311,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
       };
       request.onUpdate = null;
       hidPopup = true;
-
-      await KeyVerificationDialog(request: request).show(navigatorContext);
+      await KeyVerificationDialog(request: request).show(context);
     });
     onLoginStateChanged[name] ??= c.onLoginStateChanged.stream.listen((state) {
       final loggedInWithMultipleClients = widget.clients.length > 1;
@@ -325,7 +322,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
         _cancelSubs(c.clientName);
         widget.clients.remove(c);
         ClientManager.removeClientNameFromStore(c.clientName, store);
-        ScaffoldMessenger.of(navigatorContext).showSnackBar(
+        ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(
             content: Text(L10n.of(context)!.oneClientLoggedOut),
           ),
@@ -385,7 +382,7 @@ class MatrixState extends State<Matrix> with WidgetsBindingObserver {
         onFcmError: (errorMsg, {Uri? link}) async {
           final result = await showOkCancelAlertDialog(
             barrierDismissible: true,
-            context: navigatorContext,
+            context: context,
             title: L10n.of(context)!.pushNotificationsNotAvailable,
             message: errorMsg,
             fullyCapitalizedForMaterial: false,