Repository: flutter
Issue: [camera_windows] availableCameras() not returning all cameras
Labels: platform-windows,p: camera,package,P2,team-windows,triaged-windows

With flutter on the stable channel and camera_windows installed separately as plugin:
```
camera: ^0.9.4+11
camera_windows: ^0.1.0
```
and imported as:
```
import 'package:camera_windows/camera_windows.dart';
```
using `final cameras = await availableCameras();` returns only a partial list of cameras.

Actual Output from windows_camera can be found 

![image](https://user-images.githubusercontent.com/31410839/153874774-03f83643-8702-400f-a02a-ece95990b3d2.png)

 expected output: (demonstrated through discord).

![image](https://user-images.githubusercontent.com/31410839/153874649-60260071-f293-4579-9288-d0ac43e1853e.png)

Output of `print(cameras)` after using `final cameras = await availableCameras();`:

```
flutter: [CameraDescription(EOS Webcam Utility <\\?\root#eoswebcamsource#0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\eoswebcamcamerasource>, CameraLensDirection.front, 0), CameraDescription(USB Video <\\?\usb#vid_534d&pid_2109&mi_00#7&1d9856d9&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global>, CameraLensDirection.front, 0), CameraDescription(XSplit VCam <\\?\root#image#0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global>, CameraLensDirection.front, 0), CameraDescription(DroidCam Source 3 <\\?\root#media#0004#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global>, CameraLensDirection.front, 0)]
```

flutter doctor -v output:
```
[✓] Flutter (Channel stable, 2.10.1, on Microsoft Windows [Version 10.0.19044.1526], locale en-US)
    • Flutter version 2.10.1 at G:\Flutter\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision db747aa133 (5 days ago), 2022-02-09 13:57:35 -0600
    • Engine revision ab46186b24
    • Dart version 2.16.1
    • DevTools version 2.9.2

[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0)
    • Android SDK at D:\AndroidStudio
    • Platform android-32, build-tools 32.0.0
    • 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 (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[✓] Visual Studio - develop for Windows (Visual Studio Community 2022 17.0.6)
    • Visual Studio at G:\VisualStudio
    • Visual Studio Community 2022 version 17.0.32126.317
    • Windows 10 SDK version 10.0.19041.0

[✓] Android Studio (version 4.1)
    • 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)

[✓] VS Code (version 1.64.2)
    • VS Code at C:\Users\iulian\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.34.0

[✓] Connected device (2 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.19044.1526]
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 98.0.1108.50

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 1 category.
```