Respect theme for external folder icon (#25487) (#25711)
Respect theme for external folder icon (#25487) (#25711)

See issue #25461. 
When using a theme with alternative filetype icons `OCA.External.StatusManager.Utils.getIconRoute` should respect that, rather than hard coding the default icon.

Note this change does not affect windows_network_drive and sharepoint icons, which appear not to be easily themeable.
bluelml/core,cernbox/core,cernbox/core,cernbox/core,bluelml/core,bluelml/core,cernbox/core,bluelml/core,cernbox/core,bluelml/core