Add some more DRM event plumbing to Playlist

This was missed in https://github.com/google/ExoPlayer/commit/f08eed4145613527c0a4907e035ba483db6df253

Part of issue:#6765

PiperOrigin-RevId: 301796232

library/core/src/main/java/com/google/android/exoplayer2/Playlist.java

@@ -248,7 +248,8 @@ import java.util.Set;
    * @param analyticsCollector The analytics collector.
    */
   public final void setAnalyticsCollector(Handler handler, AnalyticsCollector analyticsCollector) {
-    eventDispatcher.addEventListener(handler, analyticsCollector);
+    eventDispatcher.addEventListener(handler, analyticsCollector, MediaSourceEventListener.class);
+    eventDispatcher.addEventListener(handler, analyticsCollector, DrmSessionEventListener.class);
   }
 
   /**