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/AudioTrack.cpp

@@ -49,7 +49,7 @@ AudioTrack::~AudioTrack()
 void AudioTrack::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioTrackPrototype>(realm, "AudioTrack"));
+    set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioTrackPrototype>(realm, "AudioTrack"_fly_string));
 
     auto id = s_audio_track_id_allocator.allocate();
     m_id = MUST(String::number(id));