[sailfish-browser] Fix online network link status. Contributes to JB#45654
[sailfish-browser] Fix online network link status. Contributes to JB#45654

States "online" and "ready" mean connman is online.
If online check fails then connman state is "ready".

sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser