chore: minor updates to iridium

packages/iridium/components/navigator/lib/src/epub/widget/webview_screen_state.dart

@@ -11,6 +11,7 @@ import 'package:flutter/foundation.dart';
 import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart' hide Decoration;
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:mno_webview/webview.dart';
 import 'package:mno_navigator/epub.dart';
 import 'package:mno_navigator/publication.dart';
 import 'package:mno_navigator/src/epub/decoration.dart';
@@ -20,7 +21,6 @@ import 'package:mno_navigator/src/epub/model/decoration_style_annotation_mark.da
 import 'package:mno_navigator/src/publication/model/annotation_type_and_idref_predicate.dart';
 import 'package:mno_server/mno_server.dart';
 import 'package:mno_shared/publication.dart';
-import 'package:mno_webview/webview.dart';
 
 @protected
 class WebViewScreenState extends State<WebViewScreen> {

packages/iridium/components/shared/lib/src/zip/lazy_zip_decoder.dart

@@ -34,8 +34,8 @@ class LazyZipDecoder {
         // UNIX systems has a creator version of 3 decimal at 1 byte offset
         if (zfh.versionMadeBy >> 8 == 3) {
           //final bool isDirectory = file.mode & 0x7000 == 0x4000;
-          final bool isFile = file.mode & 0x3F000 == 0x8000;
-          file.isFile = isFile;
+          final fileType = file.mode & 0xF000;
+          file.isFile = fileType == 0x8000 || fileType == 0x0000;
         } else {
           file.isFile = !file.name.endsWith('/');
         }