Fix setVideoInputDevice (#973)

Fixes: #863

- Fix camera switching by comparing against the pre-update device id
when deciding to call switchCamera.
- Keep room options updated for future tracks while still allowing the
active track to change devices.


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

* **Bug Fixes**
* Fixed an issue where switching the camera could fail; the app now
correctly detects and switches the active video input device.
* Added a changelog entry noting the patch that resolves camera
switching behavior.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: hiroshihorie

.changes/fix-setvideoinputdevice

@@ -0,0 +1 @@
+patch type="fixed" "Fix setVideoInputDevice not switching camera"

lib/src/core/room.dart

@@ -1130,7 +1130,7 @@ extension RoomHardwareManagementMethods on Room {
     );
 
     try {
-      if (track != null && selectedVideoInputDeviceId != device.deviceId) {
+      if (track != null && currentDeviceId != device.deviceId) {
         await track.switchCamera(device.deviceId);
         Hardware.instance.selectedVideoInput = device;
       }