Make toggle method accept impl Into<Option<bool>> (#3446)

This PR makes the `toggle` method on the various list components accept
an `impl Into<Option<bool>>` instead of just an `Option<bool>`.

This allows a caller with just a `bool` avoid having to wrap the
`Option` themselves.

Release Notes:

- N/A

crates/ui2/src/components/disclosure.rs

@@ -34,10 +34,9 @@ impl RenderOnce for Disclosure {
     fn render(self, _cx: &mut WindowContext) -> Self::Rendered {
         IconButton::new(
             "toggle",
-            if self.is_open {
-                Icon::ChevronDown
-            } else {
-                Icon::ChevronRight
+            match self.is_open {
+                true => Icon::ChevronDown,
+                false => Icon::ChevronRight,
             },
         )
         .color(Color::Muted)