Fix default input on atan2 nodes (AcademySoftwareFoundation#2352)

default input was set to 'in1', changed to 'iny'

Author: anderslanglands

libraries/stdlib/stdlib_defs.mtlx

@@ -2189,7 +2189,7 @@
   <nodedef name="ND_atan2_float" node="atan2" nodegroup="math">
     <input name="iny" type="float" value="0.0" />
     <input name="inx" type="float" value="1.0" />
-    <output name="out" type="float" defaultinput="in1" />
+    <output name="out" type="float" defaultinput="iny" />
   </nodedef>
   <nodedef name="ND_sin_vector2" node="sin" nodegroup="math">
     <input name="in" type="vector2" value="0.0, 0.0" />
@@ -2214,7 +2214,7 @@
   <nodedef name="ND_atan2_vector2" node="atan2" nodegroup="math">
     <input name="iny" type="vector2" value="1.0, 1.0" />
     <input name="inx" type="vector2" value="0.0, 0.0" />
-    <output name="out" type="vector2" defaultinput="in1" />
+    <output name="out" type="vector2" defaultinput="iny" />
   </nodedef>
   <nodedef name="ND_sin_vector3" node="sin" nodegroup="math">
     <input name="in" type="vector3" value="0.0, 0.0, 0.0" />
@@ -2239,7 +2239,7 @@
   <nodedef name="ND_atan2_vector3" node="atan2" nodegroup="math">
     <input name="iny" type="vector3" value="1.0, 1.0, 1.0" />
     <input name="inx" type="vector3" value="0.0, 0.0, 0.0" />
-    <output name="out" type="vector3" defaultinput="in1" />
+    <output name="out" type="vector3" defaultinput="iny" />
   </nodedef>
   <nodedef name="ND_sin_vector4" node="sin" nodegroup="math">
     <input name="in" type="vector4" value="0.0, 0.0, 0.0, 0.0" />
@@ -2264,7 +2264,7 @@
   <nodedef name="ND_atan2_vector4" node="atan2" nodegroup="math">
     <input name="iny" type="vector4" value="1.0, 1.0, 1.0, 1.0" />
     <input name="inx" type="vector4" value="0.0, 0.0, 0.0, 0.0" />
-    <output name="out" type="vector4" defaultinput="in1" />
+    <output name="out" type="vector4" defaultinput="iny" />
   </nodedef>
 
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