Add note about unique object names to KeyframeTrack.html

Author: floriandotorg

docs/api/en/animation/KeyframeTrack.html

@@ -132,6 +132,16 @@ <h3>[property:String name]</h3>
 			their respective actions.
 		</p>
 
+		<p>
+			Note: The track’s name does not necessarily have to be unique. Multiple tracks
+			can drive the same property, resulting in a weighted blend between the tracks 
+			according to the weights of their respective actions. However, if object names
+			used for targeting are not unique within the subtree, tracks referencing
+			those objects by name will only animate the first object encountered, even if
+			the path is unique. To reliably target distinct objects use UUIDs, or ensure
+			object names remain unique.
+		</p>
+
 		<h3>[property:Float32Array times]</h3>
 		<p>
 			A