Expose network state to iOS bridge

scripts/smoke-ios-ffi-swift.sh

@@ -57,6 +57,14 @@ struct Smoke {
         require(chats.count == 1, "expected one fake chat")
         let chat = chats[0]
 
+        let network = session.networkState()
+        require({
+            if case .ready = network {
+                return true
+            }
+            return false
+        }(), "expected ready network state")
+
         let history = try session.loadHistory(chatId: chat.id, limit: 20)
         require(history.first?.text == "Hello from fake TDLib", "expected seeded history")