lib/model, lib/config: Apply sensible defaults for auto-accepted encrypted folder (fixes #8296) (#8427)
lib/model, lib/config: Apply sensible defaults for auto-accepted encrypted folder (fixes #8296) (#8427)

* lib/model: Override scan config for auto-accepted encrypted folders.

Encrypted folders should not have the fs watcher enabled and rarely
benefit from a scheduled rescan.  The GUI adjusts the suggested
settings (watcher disabled, one day rescan interval) when accepting a
receive-encrypted folder.  Mirror that behavior to the auto-accept
case where the GUI is not involved.

Versioning also does not work well for encrypted folders, same
treatment.
syncthing/syncthing,syncthing/syncthing,syncthing/syncthing,syncthing/syncthing,syncthing/syncthing,syncthing/syncthing