[native_dio_adapter] Fix onReceiveProgress callback. (cfug#1841)

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Part of cfug#1835 

### New Pull Request Checklist

- [x] I have read the
[Documentation](https://pub.dev/documentation/dio/latest/)
- [x] I have searched for a similar pull request in the
[project](https://github.com/cfug/dio/pulls) and found none
- [x] I have updated this branch with the latest `main` branch to avoid
conflicts (via merge from master or rebase)
- [x] I have added the required tests to prove the fix/feature I'm
adding
- [ ] I have updated the documentation (if necessary)
- [ ] I have run the tests without failures
- [x] I have updated the `CHANGELOG.md` in the corresponding package

### Additional context and info (if any)

<!-- Provide more context and info about the PR. -->

---------

Co-authored-by: Jonas Uekötter <[email protected]>

plugins/native_dio_adapter/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Unreleased
 
 - Replace `DioError` with `DioException`.
+- Fix `onReceiveProgress` callback.
 
 ## 0.1.0
 

plugins/native_dio_adapter/lib/src/conversion_layer_adapter.dart

@@ -70,7 +70,7 @@ extension on StreamedResponse {
   ResponseBody toDioResponseBody() {
     final dioHeaders = headers.entries.map((e) => MapEntry(e.key, [e.value]));
     return ResponseBody(
-      Stream.fromFuture(stream.toBytes()),
+      stream.cast<Uint8List>(),
       statusCode,
       headers: Map.fromEntries(dioHeaders),
       isRedirect: isRedirect,

plugins/native_dio_adapter/test/conversion_layer_adapter_test.dart

@@ -1,3 +1,5 @@
+import 'dart:typed_data';
+
 import 'package:dio/dio.dart';
 import 'package:http/http.dart';
 import 'package:native_dio_adapter/src/conversion_layer_adapter.dart';
@@ -36,4 +38,26 @@ void main() {
 
     expect(mock.request?.headers, {'foo': 'bar'});
   });
+
+  test('download stream', () async {
+    final mock = ClientMock()
+      ..response = StreamedResponse(
+          Stream.fromIterable(<Uint8List>[
+            Uint8List.fromList([10, 1]),
+            Uint8List.fromList([1, 4]),
+            Uint8List.fromList([5, 1]),
+            Uint8List.fromList([1, 1]),
+            Uint8List.fromList([2, 4]),
+          ]),
+          200);
+    final cla = ConversionLayerAdapter(mock);
+
+    final resp = await cla.fetch(
+      RequestOptions(path: ''),
+      null,
+      null,
+    );
+
+    expect(await resp.stream.length, 5);
+  });
 }