LibWeb: Port Intrinsics from DeprecatedString

Author: https://github.com/shannonbooth
Commit: 96af80acd1
Pull-request: https://github.com/SerenityOS/serenity/pull/22057
Reviewed-by: https://github.com/trflynn89

Userland/Libraries/LibWeb/HTML/MediaError.cpp

@@ -23,7 +23,7 @@ MediaError::MediaError(JS::Realm& realm, Code code, String message)
 void MediaError::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaErrorPrototype>(realm, "MediaError"));
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaErrorPrototype>(realm, "MediaError"_fly_string));
 }
 
 }