[BUG] onRefresh called when it shouldn't be

[AlexandreKueny]

Describe the bug
shouldRefresh returns false but onRefresh is executed anyway.

To Reproduce
This is th code I'm using

DioRefreshInterceptor(
  tokenManager: tokenManager,
  authHeader: (tokenStore) {
    if (tokenStore.accessToken == null) {
      return {};
    }
    return {'Authorization': 'Bearer ${tokenStore.accessToken}'};
  },
  shouldRefresh: (response) {
    talker.log(response?.statusCode);
    talker.log(response?.statusCode == 401 || response?.statusCode == 403);
    return response?.statusCode == 401 || response?.statusCode == 403;
  },
  onRefresh: (dio, tokenStore) async {
    talker.log('try refresh');
    final response = await dio.post(
      '${F.apiUrl}/api/auth/refresh',
      data: {'refreshToken': tokenStore.refreshToken},
      options: Options(headers: {'Authorization': null}),
    );
    secureStorage.write(
      key: 'refreshToken',
      value: response.data['refreshToken'],
    );
    return TokenStore(
      accessToken: response.data['jwt'],
      refreshToken: response.data['refreshToken'],
    );
  },
  onRefreshFailedCallback: (error) {
    // Handle refresh failure side effects, such as clearing session state.
    talker.error('Token refresh failed: $error');
  },
  retryInterceptors: [
    TalkerDioLogger(
      talker: talker,
      settings: const TalkerDioLoggerSettings(
        printResponseData: false,
        printRequestHeaders: false,
        printResponseHeaders: false,
        printErrorHeaders: false,
      ),
    ),
  ],
),

On my specific case, talker.log(response?.statusCode) logs 400
So as expected talker.log(response?.statusCode == 401 || response?.statusCode == 403) logs false
But talker.log('try refresh') is still logged.

Expected behavior
onRefresh is not called

Smartphone (please complete the following information):

• Device: Pixel 10 Pro XL
• OS: Android 17

flutter doctor -v output

Details

[√] Flutter (Channel stable, 3.47.1, on Microsoft Windows [version 10.0.26200.9168], locale fr-FR) [198ms] • Flutter version 3.47.1 on channel stable at C:\Tools\flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision 6655482ec0 (9 days ago), 2026-08-19 10:07:23 -0700 • Engine revision 5d53178869 • Dart version 3.13.1 • DevTools version 2.60.0 • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, enable-record-use, enable-swift-package-manager, omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

[√] Windows Version (Windows 11 or higher, 25H2, 2009) [847ms]

[√] Android toolchain - develop for Android devices (Android SDK version 37.0.0) [2,3s]
• Android SDK at C:\Users\Alexandre\AppData\Local\Android\sdk
• Emulator version 36.6.11.0 (build_id 15507667) (CL:N/A)
• Platform android-37.0, build-tools 37.0.0
• Java binary at: C:\Program Files\Java\jdk-21.0.11\bin\java
This JDK is specified in your Flutter configuration.
To change the current JDK, run: flutter config --jdk-dir="path/to/jdk".
• Java version Java(TM) SE Runtime Environment (build 21.0.11+9-LTS-211)
• All Android licenses accepted.

[√] Chrome - develop for the web [10ms]
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[X] Visual Studio - develop Windows apps [9ms]
X Visual Studio not installed; this is necessary to develop Windows apps.
Download at https://visualstudio.microsoft.com/downloads/.
Please install the "Desktop development with C++" workload, including all of its default components

[√] Connected device (4 available) [375ms]
• sdk gphone16k x86 64 (mobile) • emulator-5554 • android-x64 • Android 17 (API 37) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [version 10.0.26200.9168]
• Chrome (web) • chrome • web-javascript • Google Chrome 151.0.7922.170
• Edge (web) • edge • web-javascript • Microsoft Edge 151.0.4129.107

[√] Network resources [373ms]
• All expected network resources are available.

! Doctor found issues in 1 category.

Additional context
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