fix: replace deprecated component in overlay examples

The overlay examples use a simple pass-through component
that gives a message to the scheduler. This is now provided
by a `fromHandlers` static method on the `Tube` component
instead of a separate component.

examples/browser/test/h264-overlay-player.js

@@ -53,7 +53,7 @@ const play = (host) => {
   // a peek component, which will call the run method of the
   // scheduler every time a message passes on the pipeline.
   const scheduler = new utils.Scheduler(pipeline, draw)
-  const runScheduler = components.Component.peek((msg) => scheduler.run(msg))
+  const runScheduler = components.Tube.fromHandlers((msg) => scheduler.run(msg))
   pipeline.insertBefore(pipeline.lastComponent, runScheduler)
 
   // When we now the UNIX time of the start of the presentation,

examples/browser/test/mjpeg-overlay-player.js

@@ -49,7 +49,7 @@ const play = (host) => {
   // a peek component, which will call the run method of the
   // scheduler every time a message passes on the pipeline.
   const scheduler = new utils.Scheduler(pipeline, draw)
-  const runScheduler = components.Component.peek((msg) => scheduler.run(msg))
+  const runScheduler = components.Tube.fromHandlers((msg) => scheduler.run(msg))
   pipeline.insertBefore(pipeline.lastComponent, runScheduler)
 
   // When we now the UNIX time of the start of the presentation,