LibWeb: Add a stub for HTMLMediaElement.played()

Author: https://github.com/Psychpsyo
Commit: 3952ff4786
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3563
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/HTML/HTMLMediaElement.h

@@ -57,6 +57,7 @@ public:
     NetworkState network_state() const { return m_network_state; }
 
     [[nodiscard]] GC::Ref<TimeRanges> buffered() const;
+    [[nodiscard]] GC::Ref<TimeRanges> played() const;
 
     static inline constexpr auto supported_video_subtypes = Array {
         "webm"sv,