(BACKWARDS) Create anomalous default clip:

- Ensure backwards compatibility by creating an anomalous clip to be used by default on animators

Framework/Editor/V0/Aac.cs

@@ -314,6 +314,25 @@ namespace AnimatorAsCode.V0
                     .WithUnit(unit, keyframes => keyframes.Constant(0, 0f).Constant(numberOf, 0f)));
         }
 
+        // For backwards compatibility, generates an animation with 2 keyframes that are at a distance of 1 / 60 of 1 frame,
+        // that is 1 / 3600 seconds.
+        // This was due to DummyClipLasting returning a clip with unit conversion applied twice,
+        // resulting in an "undesired" animation which was functional anyways.
+        // Since this dummy clip is used internally on all uninitalized states,
+        // preserve this behaviour so that existing animators don't break due to this change.
+        protected AacFlClip AnomalousSingleKeyframeClip()
+        {
+            var numberOf = 1f;
+            var unit = AacFlUnit.Frames;
+            
+            var dummyClip = AacV0.NewClip(_configuration, $"D({numberOf} {Enum.GetName(typeof(AacFlUnit), unit)})");
+
+            var duration = unit == AacFlUnit.Frames ? numberOf / 60f : numberOf;
+            return new AacFlClip(_configuration, dummyClip)
+                .Animating(clip => clip.Animates("_ignored", typeof(GameObject), "m_IsActive")
+                    .WithUnit(unit, keyframes => keyframes.Constant(0, 0f).Constant(duration, 0f)));
+        }
+
         public void RemoveAllMainLayers()
         {
             var layerName = _configuration.SystemName;
@@ -379,7 +398,7 @@ namespace AnimatorAsCode.V0
 
         private AacFlClip CreateEmptyClip()
         {
-            var emptyClip = DummyClipLasting(1, AacFlUnit.Frames);
+            var emptyClip = AnomalousSingleKeyframeClip();
             return emptyClip;
         }