Add note about wlroots change

src/layer_surface.zig

@@ -105,6 +105,9 @@ fn handleUnmap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
     // may be closed during the inital configure since we set our mapped
     // bool to true so that we can avoid making the arrange function even
     // more complex.
+    //
+    // TODO(wlroots): Remove this check on updating
+    // https://github.com/swaywm/wlroots/commit/11e94c406bb75c9a8990ce99489798411deb110c
     if (self.wlr_layer_surface.mapped) {
         // remove listeners only active while the layer surface is mapped
         c.wl_list_remove(&self.listen_commit.link);