Physics joints updated to the new API (#1361)

Co-authored-by: Ulugbek Adilbekov <ulugbek@amazon.com>

Gems/PhysX/Code/Source/PhysXCharacters/API/RagdollNode.cpp

@@ -38,11 +38,17 @@ namespace PhysX
 
     RagdollNode::~RagdollNode()
     {
+        DestroyJoint();
         DestroyPhysicsBody();
     }
 
-    void RagdollNode::SetJoint(const AZStd::shared_ptr<Physics::Joint>& joint)
+    void RagdollNode::SetJoint(AzPhysics::Joint* joint)
     {
+        if (m_joint)
+        {
+            return;
+        }
+        
         m_joint = joint;
     }
 
@@ -52,7 +58,7 @@ namespace PhysX
         return *m_rigidBody;
     }
 
-    const AZStd::shared_ptr<Physics::Joint>& RagdollNode::GetJoint() const
+    AzPhysics::Joint* RagdollNode::GetJoint()
     {
         return m_joint;
     }
@@ -167,4 +173,16 @@ namespace PhysX
         }
     }
 
+    void RagdollNode::DestroyJoint()
+    {
+        if (m_joint != nullptr && m_sceneOwner != AzPhysics::InvalidSceneHandle)
+        {
+            if (auto* sceneInterface = AZ::Interface<AzPhysics::SceneInterface>::Get())
+            {
+                sceneInterface->RemoveJoint(m_sceneOwner, m_joint->m_jointHandle);
+            }
+            m_joint = nullptr;
+        }
+    }
+
 } // namespace PhysX