[x11] Fix focus event on Window.focus()

When calling `Window.focus()` the borders did not update on the focused
window and the `WindowName` widget did not reflect the change.

Fixes qtile#3751

libqtile/backend/x11/window.py

@@ -1327,12 +1327,12 @@ def focus(self, warp: bool = True) -> None:
         self.qtile.core._root.set_property("_NET_ACTIVE_WINDOW", self.window.wid)
         self._ungrab_click()
 
-        if self.group:
-            self.group.current_window = self
-
         # Check if we need to restack a previously focused fullscreen window
         self.qtile.core.check_stacking(self)
 
+        if self.group and self.group.current_window is not self:
+            self.group.focus(self)
+
         hook.fire("client_focus", self)
 
     @expose_command()