Moved "SceneRenderPipeline.cs" out of editor folder, and added proper compilation condition to avoid errors.

The component can now be attached back to gameobjects

com.unity.render-pipelines.core/CoreRP/Utilities/SceneRenderPipeline.cs

 {
     public RenderPipelineAsset renderPipelineAsset;
 
+#if UNITY_EDITOR
     void OnEnable()
     {
         GraphicsSettings.renderPipelineAsset = renderPipelineAsset;
     {
         GraphicsSettings.renderPipelineAsset = renderPipelineAsset;
     }
+#endif
 }