Merge

libraries/mediaviewer/impl/src/main/kotlin/io/element/android/libraries/mediaviewer/impl/local/player/ExoPlayerForPreview.kt

@@ -266,4 +266,5 @@ class ExoPlayerForPreview(
     override fun setVideoCodecParameters(codecParameters: CodecParameters) {}
     override fun addVideoCodecParametersChangeListener(listener: CodecParametersChangeListener, keys: List<String>) {}
     override fun removeVideoCodecParametersChangeListener(listener: CodecParametersChangeListener) {}
+    override fun setEnforceAdPlaybackOnTimelineRefresh(enforceAdPlaybackOnTimelineRefresh: Boolean) = throw NotImplementedError()
 }

libraries/mediaviewer/impl/src/main/kotlin/io/element/android/libraries/mediaviewer/impl/viewer/MediaViewerNode.kt

@@ -92,7 +92,7 @@ class MediaViewerNode(
         is MediaViewerEntryPoint.Params.RoomMedia -> {
             val eventId = inputs.eventId
             if (eventId == null) {
-                // Should not happen
+                // Local echo, the viewer will not be focused on the item
                 timelineMediaGalleryDataSource
             } else {
                 // Can we use a specific timeline?