more restrictive timeout on notification init

lib/main.dart

@@ -71,6 +71,22 @@ void main(List<String> args) async {
   WidgetsFlutterBinding.ensureInitialized();
   MediaKit.ensureInitialized();
 
+  isInBackground =
+      Platform.environment["FLUTTER_HEADLESS"] != null ||
+      args.contains("--unifiedpush-bg");
+
+  LicenseRegistry.addLicense(() => .fromIterable(fontLicenses));
+
+  FlutterError.onError = (FlutterErrorDetails details) =>
+      showError(details.exception.toString(), details.stack);
+
+  if (isInBackground) {
+    await ProviderContainer()
+        .read(UnifiedPushController.provider.future)
+        .timeout(Duration(seconds: 20), onTimeout: () => false);
+
+    exit(0);
+  } else {
     if (Platform.isLinux || Platform.isMacOS || Platform.isWindows) {
       await windowManager.ensureInitialized();
       await windowManager.waitUntilReadyToShow(
@@ -82,22 +98,6 @@ void main(List<String> args) async {
       await windowManager.setMinimumSize(Size.square(500));
     }
 
-  isInBackground =
-      Platform.environment["FLUTTER_HEADLESS"] != null ||
-      args.contains("--unifiedpush-bg");
-
-  LicenseRegistry.addLicense(() => .fromIterable(fontLicenses));
-
-  FlutterError.onError = (FlutterErrorDetails details) =>
-      showError(details.exception.toString(), details.stack);
-
-  if (isInBackground) {
-    await ProviderContainer().read(UnifiedPushController.provider.future);
-
-    // In case it didn't exit for some reason
-    await Future.delayed(Duration(seconds: 20));
-    exit(0);
-  } else {
     runApp(
       ProviderScope(
         retry: (_, _) => null,