_adapters_from_managed_objects in dbus.py doesn't ensure managedobject entry implements interface.

[JOSEPHGILBY]

Describe the bug
This function only checks that a managed object's path starts with "/org/bluez/hci" and doesn't check that the entry implements the interface org.bluez.Adapter1.

To Reproduce
If you call load() and then try to call adapter_details() when the dbus object server has device interfaces loaded, then devices may get returned instead of adapters.

Additional context