Button2 – Part1 (#3420)

## TODO

- [x] Remove `InteractionState`
- [ ] `Selectable` should use `Selection` instead of a boolean
- [x] Clean out ui2 prelude
- [ ] Build out button2 button types
- [ ] Port old buttons

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>

crates/workspace2/src/pane.rs

@@ -1482,18 +1482,14 @@ impl Pane {
                             .gap_px()
                             .child(
                                 div().border().border_color(gpui::red()).child(
-                                    IconButton::new("navigate_backward", Icon::ArrowLeft).state(
-                                        InteractionState::Enabled
-                                            .if_enabled(self.can_navigate_backward()),
-                                    ),
+                                    IconButton::new("navigate_backward", Icon::ArrowLeft)
+                                        .disabled(!self.can_navigate_backward()),
                                 ),
                             )
                             .child(
                                 div().border().border_color(gpui::red()).child(
-                                    IconButton::new("navigate_forward", Icon::ArrowRight).state(
-                                        InteractionState::Enabled
-                                            .if_enabled(self.can_navigate_forward()),
-                                    ),
+                                    IconButton::new("navigate_forward", Icon::ArrowRight)
+                                        .disabled(!self.can_navigate_forward()),
                                 ),
                             ),
                     ),