Fix entities not being rendered in the first frame

src/main/java/eu/crushedpixel/replaymod/video/VideoRenderer.java

@@ -78,6 +78,7 @@ public class VideoRenderer {
         // the second time to prevent interpolation of the player position
         tick();
 
+        mc.renderGlobal.renderEntitiesStartupCounter = 0;
 
         framesDone = 0;
         while (framesDone < totalFrames && !cancelled) {