Merge branch 'krille/fix-android-download' into 'main'

fix: Android download

See merge request famedly/fluffychat!557

lib/utils/matrix_sdk_extensions.dart/matrix_file_extension.dart

@@ -15,7 +15,9 @@ extension MatrixFileExtension on MatrixFile {
     final fileName = name.split('/').last;
     if (PlatformInfos.isMobile) {
       final tmpDirectory = PlatformInfos.isAndroid
-          ? Directory('/storage/emulated/0/Download/')
+          ? (await getExternalStorageDirectories(
+                  type: StorageDirectory.downloads))
+              .first
           : await getTemporaryDirectory();
       final path = '${tmpDirectory.path}$fileName';
       await File(path).writeAsBytes(bytes);