Expandable Folders - Expanding folders in single click mode will activate them

Single click (Preferences > Behavior) does not expand the item

Hmm, if we want the default behavior of clicking the expander to expand a row when single click is enabled we would have to override the default behavior of button. I am not sure as of now how to do it but i'll look into it.

Alternatively we could do something like expand on hover. GtkTreeView has hoever_expand as a property but no property to set a custom time like hover_select_delay that ExoTreeView provides. So if this is to be a feature we should add hover expand & hover expand delay as properties to ExoTreeView.

Originally mentioned here !364 (comment 75708) for