Revert "Hide the mouse when the user is typing in the editor (#25040)" (#25393)

This reverts commit a8610fbd13.

I've been seeing some reports of segmentation faults that appear to
point to this change as the culprit.

Closes #25366.

Release Notes:

- Community: Reverted #25040, so remove the corresponding entry from the
release notes.

crates/gpui/src/platform/linux/wayland/client.rs

@@ -667,13 +667,7 @@ impl LinuxClient for WaylandClient {
             let serial = state.serial_tracker.get(SerialKind::MouseEnter);
             state.cursor_style = Some(style);
 
-            if let CursorStyle::None = style {
-                let wl_pointer = state
-                    .wl_pointer
-                    .clone()
-                    .expect("window is focused by pointer");
-                wl_pointer.set_cursor(serial, None, 0, 0);
-            } else if let Some(cursor_shape_device) = &state.cursor_shape_device {
+            if let Some(cursor_shape_device) = &state.cursor_shape_device {
                 cursor_shape_device.set_shape(serial, style.to_shape());
             } else if let Some(focused_window) = &state.mouse_focused_window {
                 // cursor-shape-v1 isn't supported, set the cursor using a surface.