In Web Map Item Details->Application Settings->Enable Search By Layer, I am noticing that only ArcGIS Online hosted feature layers show up as an option to configure. I would like to request that reference ArcGIS Enterprise layers are also supported.

To show that this is the case, here are all the layers in this map that are not showing up in the dropdown. Most of the layers in this map are from ArcGIS Enterprise that have been collaborated over to ArcGIS Online.
