fix: The notification center panel is too close to the edge

Change to 10px from the edge

Issue: linuxdeepin/developer-center#9373

app/utils/geometryhandler.cpp

@@ -103,7 +103,7 @@ QRect GeometryHandler::getGeometry(const int expectedWidth, const bool reduceDoc
  }
  }
 
- return QRect(x, y, expectedWidth, height);
+ return QRect(x - UI::Widget::WindowMargin, y, expectedWidth, height);
 }
 
 QRect GeometryHandler::calcDisplayRect(const QRect &dockRect)