Titlebar project menu double click (#3784)

This addresses a bug where popover menus in the titlebar were rendered
only after a 2nd click. The first click was creating the View which the
second one then rendered.
In addition to this, `PopoverMenu::menu` function argument can now
return an `Option<View<T>>` instead of `View<T>` as the creation of the
menu can fail (as it might in case of git popover).

Release Notes:

- N/A

crates/copilot_button2/src/copilot_button.rs

@@ -102,8 +102,10 @@ impl Render for CopilotButton {
         div().child(
             popover_menu("copilot")
                 .menu(move |cx| match status {
-                    Status::Authorized => this.update(cx, |this, cx| this.build_copilot_menu(cx)),
-                    _ => this.update(cx, |this, cx| this.build_copilot_start_menu(cx)),
+                    Status::Authorized => {
+                        Some(this.update(cx, |this, cx| this.build_copilot_menu(cx)))
+                    }
+                    _ => Some(this.update(cx, |this, cx| this.build_copilot_start_menu(cx))),
                 })
                 .anchor(AnchorCorner::BottomRight)
                 .trigger(