LibWeb+LibWebView+WebContent+UI: Port the document title to UTF-16

Author: https://github.com/trflynn89
Commit: 50fed1d65c
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5633
Reviewed-by: https://github.com/gmta

Libraries/LibWeb/HTML/HTMLTitleElement.cpp

@@ -32,7 +32,7 @@ void HTMLTitleElement::children_changed(ChildrenChangedMetadata const* metadata)
     HTMLElement::children_changed(metadata);
     auto navigable = this->navigable();
     if (navigable && navigable->is_traversable()) {
-        navigable->traversable_navigable()->page().client().page_did_change_title(document().title().to_byte_string());
+        navigable->traversable_navigable()->page().client().page_did_change_title(document().title());
     }
 }