Apply review fixes

- crates/ui-egui/src/app/input.rs
- crates/ui-egui/src/services.rs

crates/ui-egui/src/app/input.rs

@@ -166,6 +166,7 @@ impl DesignApp {
     /// Where the pointer is in the window, asked of the system ([`crate::Services::pointer`]),
     /// for files dropped without pointer events: dragged in from another application, they bring
     /// none. `None` when the system doesn't say or the window's place isn't known.
+    #[cfg(not(target_arch = "wasm32"))]
     pub(crate) fn system_pointer(&self, ctx: &egui::Context) -> Option<egui::Pos2> {
         let at = (self.services.pointer.as_ref()?)()?;
         // The system's points are unscaled; egui's (the window's rect too) are divided by the

crates/ui-egui/src/services.rs

@@ -47,6 +47,6 @@ pub struct Services {
     /// The pointer's place on the screen, asked when a file is dropped: a file dragged in from
     /// another application brings no pointer events with it (winit reports none during a drag on
     /// macOS), so without it a drop can't tell which frame it landed on. `None`: a drop without
-    /// pointer events loads the place cursor.
+    /// pointer events lands in the middle of the view.
     pub pointer: Option<PointerFn>,
 }