Fix loading screen messages not appearing (#3925)

## About The Pull Request
516 fucked with href stuff and so this request never sends and the
client is never marked ready so init loading messages don't get sent

## Why It's Good For The Game
Cool live loading messages

## Proof Of Testing
This is a web edit from bed that I tested earlier and it worked

## Changelog
🆑
fix: fixed loading screen not updating as subsystems init
fix: fixed character name on title screen not updating when changing
slots
/🆑

modular_skyrat/modules/title_screen/code/title_screen_html.dm

@@ -170,13 +170,12 @@ GLOBAL_LIST_EMPTY(startup_messages)
 		"}
 
 	// Tell the server this page loaded.
-	dat += {"
-		<script>
-			var ready_request = new XMLHttpRequest();
-			ready_request.open("GET", "?src=[text_ref(src)];title_is_ready=1", true);
-			ready_request.send();
-		</script>
-	"}
+	if(!title_screen_is_ready)
+		dat += {"
+			<script>
+				location.href = "byond://?src=[text_ref(src)];title_is_ready=1";
+			</script>
+		"}
 
 	dat += "</body></html>"