Fix jittering once a tick during rendering pre-1.16 (fixes #264)

The fetching of the ticks variable was accidentally moved to before the timer
update while updating to 1.16, this caused the interpolation to be off by one
tick each frame in which the timer advances to the next tick.

src/main/java/com/replaymod/render/rendering/VideoRenderer.java

@@ -236,14 +236,15 @@ public class VideoRenderer implements RenderInfo {
         RenderTickCounter timer = ((MinecraftAccessor) mc).getTimer();
         //#if MC>=11600
         //$$ int elapsedTicks =
-        //#else
-        int elapsedTicks = timer.ticksThisFrame;
         //#endif
         timer.beginRenderTick(
                 //#if MC>=11400
                 MCVer.milliTime()
                 //#endif
         );
+        //#if MC<11600
+        int elapsedTicks = timer.ticksThisFrame;
+        //#endif
 
         executeTaskQueue();