Display Proper Error Message for AEM Assets in Workfront

Description - When attempting to access AEM assets through WF documents section, if an asset is not available, then it should show the appropriate HTTP code instead of generic 404

Why is this feature important to you - It will speed up the debugging process and give feedback on why asset retrieval failed.

How would you like the feature to work - When a user clicks on the preview of a document that is an AEM asset, and they are not authorised, they will encounter 401 error with appropriate error message. When a user clicks on the preview of a document that is an AEM asset, and the AEM instance is not functioning, it will show the 500 error.

Current Behaviour - You just get the 404 error.