fix: stop camera after stop publishing video track(windows). (#960)

close #355 

<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Bug Fixes**
* Adjusted track mute behavior so the platform-specific condition now
targets only Firefox on web.
* Fixed Windows behavior to ensure the camera stops after a video track
is unpublished.

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<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Hiroshi Horie <548776+hiroshihorie@users.noreply.github.com>

Author: cloudwebrtc

.changes/windows-stop-camera-after-unpublish

@@ -0,0 +1 @@
+patch type="fixed" "Windows: stop camera after unpublishing video track"

lib/src/support/platform.dart

@@ -39,9 +39,7 @@ BrowserVersion lkBrowserVersion() => lkBrowserVersionImplementation();
 
 /// skips stop/replaceTrack for the following platforms and only toggles
 /// track.enabled.
-bool skipStopForTrackMute() =>
-    {PlatformType.windows}.contains(lkPlatform()) ||
-    (lkPlatformIs(PlatformType.web) && [BrowserType.firefox].contains(lkBrowser()));
+bool skipStopForTrackMute() => (lkPlatformIs(PlatformType.web) && [BrowserType.firefox].contains(lkBrowser()));
 
 enum PlatformType { web, windows, linux, macOS, android, fuchsia, iOS }