As far as I know, there isn't a "reset feature layer button". Could that functionality be added? That would be easier than re-adding a problem layer to the map. There are cases where a map is old or created by someone else, and it is inconvenient to search for the AGOL data source to re-add it to the map.
Ideally, there would be a list of property categories. I'd choose what properties I want to reset.
- Symbology
- Join
- Labelling
- Etc.