mocking image is affecting other image mocks

[ryzizub]

Describe the bug
I'm using mockNetworkImages and also in same group of tests im doing two tests that are cowering errorBuilder, so im mocking trough HttpOverride failing HttpClient. Seems that if I run those tests separately it's running ok, but if I run them as a group those which are running later are failing cause either there is mocked failing client or successful client.

To Reproduce
I included minimum reproducible example

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mocktail/mocktail.dart';
import 'package:mocktail_image_network/mocktail_image_network.dart';

import 'helpers/pump_app.dart';

class _MockHttpClient extends Mock implements HttpClient {}

void main() {
  group('testing image', () {
    testWidgets('successful render', (tester) async {
      await mockNetworkImages(() {
        return tester.pumpApp(
          const _RandomImageWidget(
            src: 'https://testing.com/image.png',
          ),
        );
      });

      expect(find.byType(Image), findsOneWidget);
      expect(find.byType(_ErrorContainer), findsNothing);
    });

    testWidgets('not sucessful render', (tester) async {
      final httpClient = _MockHttpClient();

      when(
        () => httpClient.getUrl(
          Uri.parse(
            'https://testing.com/image2.png',
          ),
        ),
      ).thenThrow(Exception());

      await HttpOverrides.runZoned(
        () async {
          await tester.pumpApp(
            const _RandomImageWidget(
              src: 'https://testing.com/image2.png',
            ),
          );
          await tester.pump();
        },
        createHttpClient: (_) => httpClient,
      );

      expect(find.byType(Image), findsOneWidget);
      expect(find.byType(_ErrorContainer), findsOneWidget);
    });
  });
}

class _RandomImageWidget extends StatelessWidget {
  const _RandomImageWidget({
    required this.src,
  });

  final String src;

  @override
  Widget build(BuildContext context) {
    return Image.network(
      src,
      errorBuilder: (context, error, _) {
        return _ErrorContainer();
      },
    );
  }
}

class _ErrorContainer extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

Expected behavior
I should be able to mock both behaviour in the same group

Screenshots

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[✓] Flutter (Channel stable, 3.24.3, on macOS 15.0.1 24A348 darwin-arm64, locale cs-CZ)
    • Flutter version 3.24.3 on channel stable at /Users/ryzizub/.asdf/installs/flutter/3.24.3-stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 2663184aa7 (5 weeks ago), 2024-09-11 16:27:48 -0500
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    • Java version OpenJDK Runtime Environment (build 17.0.11+0-17.0.11b1207.24-11852314)
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    • Java version OpenJDK Runtime Environment (build 17.0.11+0-17.0.11b1207.24-11852314)

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Additional context
None