[browser] Handle external urls immediately when seen. JB#56506 OMP#JOLLA-557
[browser] Handle external urls immediately when seen. JB#56506 OMP#JOLLA-557

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