xwayland: apply fullscreen state after mapping tiled window

src/ifs/wl_surface/x_surface/xwindow.rs

@@ -282,6 +282,9 @@ impl Xwindow {
             }
             Change::Map => {
                 self.data.state.map_tiled(self.clone());
+                if self.data.info.fullscreen.get() {
+                    self.clone().tl_set_fullscreen(true);
+                }
                 self.data.title_changed();
             }
         }