Listview scrolling with mouse wheel on windows is not smooth

Hi Flutter Team,

I found an issue with listview scrolling on windows build. The scrolling using mouse wheel isn’t smooth.

Steps to Reproduce

@override
  Widget build(BuildContext context) {
    return Scaffold(
      body: ListView.separated(
        itemCount: 1000,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text('row $index'),
          );
        },
        separatorBuilder: (context, index) {
          return Divider();
        },
      ),
    );
  }

Expected results: Scrolling with mouse wheel should be the same way as scrolling using the mousepad, the fluid smooth scrolling animation isn’t there

Actual results: It doesn’t scroll the list smoothly. The scroll stops immediately instead of gradually stop.

Logs
[√] Flutter (Channel stable, 2.0.2, on Microsoft Windows [Version 10.0.18363.1440], locale en-MY)
    • Flutter version 2.0.2 at C:\flutter
    • Framework revision 8962f6dc68 (8 days ago), 2021-03-11 13:22:20 -0800
    • Engine revision 5d8bf811b3
    • Dart version 2.12.1

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\HP\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Users\HP\AppData\Local\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.8.5)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.8.31005.135
    • Windows 10 SDK version 10.0.18362.0

[√] Android Studio (version 4.1.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] IntelliJ IDEA Community Edition (version 2020.3)
    • IntelliJ at C:\Program Files\JetBrains\New folder\IntelliJ IDEA Community Edition 2020.2.3
    • Flutter plugin version 54.0.3
    • Dart plugin version 203.7759

[√] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.18363.1440]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 89.0.4389.90
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 88.0.705.68

• No issues found!

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