Fix NvCloth tests to work with new EMotionFX API

Signed-off-by: Chris Burel <burelc@amazon.com>

Gems/NvCloth/Code/Tests/ActorHelper.cpp

@@ -28,9 +28,9 @@ namespace UnitTest
     {
     }
 
-    AZ::u32 ActorHelper::AddJoint(
+    size_t ActorHelper::AddJoint(
         const AZStd::string& name,
-        const AZ::Transform localTransform,
+        const AZ::Transform& localTransform,
         const AZStd::string& parentName)
     {
         EMotionFX::Node* parentNode = GetSkeleton()->FindNodeByNameNoCase(parentName.c_str());
@@ -38,7 +38,7 @@ namespace UnitTest
         auto node = AddNode(
             GetNumNodes(),
             name.c_str(),
-            (parentNode) ? parentNode->GetNodeIndex() : MCORE_INVALIDINDEX32);
+            (parentNode) ? parentNode->GetNodeIndex() : InvalidIndex);
 
         GetBindPose()->SetLocalSpaceTransform(node->GetNodeIndex(), localTransform);
 

Gems/NvCloth/Code/Tests/ActorHelper.h

@@ -23,9 +23,9 @@ namespace UnitTest
         explicit ActorHelper(const char* name);
 
         //! Adds a node to the skeleton.
-        AZ::u32 AddJoint(
+        size_t AddJoint(
             const AZStd::string& name,
-            const AZ::Transform localTransform = AZ::Transform::CreateIdentity(),
+            const AZ::Transform& localTransform = AZ::Transform::CreateIdentity(),
             const AZStd::string& parentName = "");
 
         //! Adds a collider to the cloh configuration.