fix actions

examples/animation.py

@@ -7,18 +7,18 @@ from textual.widgets import Footer, Placeholder
 class SmoothApp(App):
     """Demonstrates smooth animation. Press 'b' to see it in action."""
 
-    async def on_load(self, event: events.Load) -> None:
+    async def on_load(self) -> None:
         """Bind keys here."""
         await self.bind("b", "toggle_sidebar", "Toggle sidebar")
         await self.bind("q", "quit", "Quit")
 
-    show_bar: Reactive[bool] = Reactive(False)
+    show_bar = Reactive(False)
 
-    async def watch_show_bar(self, show_bar: bool) -> None:
+    def watch_show_bar(self, show_bar: bool) -> None:
         """Called when show_bar changes."""
         self.bar.animate("layout_offset_x", 0 if show_bar else -40)
 
-    async def action_toggle_sidebar(self) -> None:
+    def action_toggle_sidebar(self) -> None:
         """Called when user hits 'b' key."""
         self.show_bar = not self.show_bar