When using IWD-side autoconnect mode (current default), in .deactivate() and .deactivate_async() refrain from commanding IWD to actually disconnect until the device is managed. Likely the device is already disconnected but in any case it's up to IWD to decide in this mode.
Calling IWD device's .Disconnect() D-Bus method has the side effect of disabling autoconnect and doing this while NM is still in platform-init was unexpectedly leaving the device without autoconnect after platform-init was done, according to user reports.
Fixes: dc0e31fb