macos: change to send motion events to NSApp

This fix addresses a problem where the mouse cursor cannot be changed after it becomes a resize indicator, even in non-CSD windows

gdk/macos/gdkmacosdisplay-translate.c

@@ -1265,6 +1265,15 @@ _gdk_macos_display_translate (GdkMacosDisplay *self,
           _gdk_macos_display_clear_sorting (self);
         }
     }
+  else if (is_motion_event(event_type))
+    {
+      NSWindow *orig_window = [nsevent window];
+
+      if (orig_window && GDK_IS_MACOS_WINDOW (orig_window)) {
+        [NSApp sendEvent:nsevent];
+      }
+    }
+
   return fill_event (self, window, nsevent, x, y);
 }