I have several Drupal 9 sites on multi-site setup. currently all these sub sites use one theme placed in /themes/MyTheme folder.
now i need to theme few nodes on site A and site B and this is only difference between all sites. if i use page--node--x.html.twig
convention to change layout of node x on site A, it changes layout of node x on all sites.
what is easiest way to apply page--node--x.html.twig
only to site A but not site B?
is it possible to have theme on themes/MyTheme/ folder but copy only page--node--x.html.twig
to sites/siteA/themes/custom folder to overwrite this layout only for site A?