expose IsSkinnedMesh() (o3de#17556)

Signed-off-by: Karl Haubenwallner <[email protected]>

Author: kh-huawei

Gems/Atom/Feature/Common/Code/Include/Atom/Feature/Mesh/MeshFeatureProcessor.h

@@ -58,6 +58,7 @@ namespace AZ
             };
 
             using PostCullingInstanceDataList = AZStd::vector<PostCullingInstanceData>;
+            const bool IsSkinnedMesh() { return m_descriptor.m_isSkinnedMesh; }
 
         private:
             class MeshLoader