Fix xwayland floating views unclickable

Some xwayland views are first configured with a 1x1 size, and then
resized. Since the view size isn't updated, they are unclickable.

Fixes #2195

sway/desktop/xwayland.c

@@ -284,6 +284,11 @@ static void handle_commit(struct wl_listener *listener, void *data) {
 		transaction_notify_view_ready_by_size(view,
 				surface_state->width, surface_state->height);
 	}
+
+	if (container_is_floating(view->swayc)) {
+		view_update_size(view, surface_state->width, surface_state->height);
+	}
+
 	view_damage_from(view);
 }