expose a new script event that updates the is_online value stored in ScriptThread

Signed-off-by: TG <ebiritg@gmail.com>

components/script/messaging.rs

@@ -92,6 +92,7 @@ impl MixedMessage {
                 ScriptThreadMessage::SetWebGPUPort(..) => None,
                 ScriptThreadMessage::SetScrollStates(id, ..) => Some(*id),
                 ScriptThreadMessage::EvaluateJavaScript(id, _, _) => Some(*id),
+                ScriptThreadMessage::SetNetWorkState(..) => None,
             },
             MixedMessage::FromScript(inner_msg) => match inner_msg {
                 MainThreadScriptMsg::Common(CommonScriptMsg::Task(_, _, pipeline_id, _)) => {