Reduce size of Simulator in todos test

examples/todos/snapshots/creates_a_new_task.sha256

@@ -1 +1 @@
-a7c2ac4b57f84416812e2134e48fe34db55a757d9176beedf5854a2f69532e32
+b41c73d214894bf5f94f787e5f265cff6500822b2d4a29a4ac0c847a71db7123

examples/todos/src/main.rs

@@ -594,11 +594,12 @@ mod tests {
     use iced_test::{selector, Error, Simulator};
 
     fn simulator(todos: &Todos) -> Simulator<Message> {
-        Simulator::with_settings(
+        Simulator::with_size(
             Settings {
                 fonts: vec![Todos::ICON_FONT.into()],
                 ..Settings::default()
             },
+            (512.0, 512.0),
             todos.view(),
         )
     }