Fix not logging 3D gesture z component correctly in Gesture Detection…

… example (#5630)

Thanks to @Wumpf, we identified a problem in the 3D view and fixed it.
It was a typo (y instead z) and made the view look 2D instead of 3D.

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examples/python/gesture_detection/main.py

@@ -98,7 +98,7 @@ def convert_landmarks_to_image_coordinates(
 
     @staticmethod
     def convert_landmarks_to_3d(hand_landmarks: list[list[NormalizedLandmark]]) -> list[tuple[float, float, float]]:
-        return [(lm.x, lm.y, lm.y) for hand_landmark in hand_landmarks for lm in hand_landmark]
+        return [(lm.x, lm.y, lm.z) for hand_landmark in hand_landmarks for lm in hand_landmark]
 
     def detect_and_log(self, image: npt.NDArray[np.uint8], frame_time_nano: int) -> None:
         # Recognize gestures in the image