fix(sample): workaround for #1196

Author: homuler

Assets/MediaPipeUnity/Samples/Scenes/Tasks/Pose Landmark Detection/PoseLandmarkerRunner.cs

@@ -65,7 +65,10 @@ protected override IEnumerator Run()
       var transformationOptions = imageSource.GetTransformationOptions();
       var flipHorizontally = transformationOptions.flipHorizontally;
       var flipVertically = transformationOptions.flipVertically;
-      var imageProcessingOptions = new Tasks.Vision.Core.ImageProcessingOptions(rotationDegrees: (int)transformationOptions.rotationAngle);
+
+      // Always setting rotationDegrees to 0 to avoid the issue that the detection becomes unstable when the input image is rotated.
+      // https://github.com/homuler/MediaPipeUnityPlugin/issues/1196
+      var imageProcessingOptions = new Tasks.Vision.Core.ImageProcessingOptions(rotationDegrees: 0);
 
       AsyncGPUReadbackRequest req = default;
       var waitUntilReqDone = new WaitUntil(() => req.done);