x11: Fix maximize animation

Window::maximize() used to be split in two halves:

- generic Window::setMaximized() and Window::maximize()
- protocol-specific Window::changeMaximize()

Window::changeMaximize() used to block all geometry updates and
Window::maximize() emit "maximize mode changed" signals. With that,
frameGeometryChanged came always before clientMaximizedStateChanged.

After merging Window::changeMaximize() and Window::maximize(), the order
of the signals has been reversed because of RAII. Unblock geometry
updates explicitly to preserve the old behavior.

BUG: 465157

src/x11window.cpp

@@ -4336,7 +4336,7 @@ void X11Window::maximize(MaximizeMode mode)
         return;
     }
 
-    GeometryUpdatesBlocker blocker(this);
+    blockGeometryUpdates(true);
 
     // maximing one way and unmaximizing the other way shouldn't happen,
     // so restore first and then maximize the other way
@@ -4549,6 +4549,7 @@ void X11Window::maximize(MaximizeMode mode)
         break;
     }
 
+    blockGeometryUpdates(false);
     updateAllowedActions();
     updateWindowRules(Rules::MaximizeVert | Rules::MaximizeHoriz | Rules::Position | Rules::Size);
     Q_EMIT quickTileModeChanged();