Issue #3111468 by bnjmnm, lauriii: Decouple Stable libraries from Bartik/Seven/Claro/Umami

...iles/demo_umami/themes/umami/css/components/user/user.css

...profiles/demo_umami/themes/umami/js/ajax.temporary.es6.js

core/profiles/demo_umami/themes/umami/js/ajax.temporary.js

...es/demo_umami/themes/umami/js/user.theme.temporary.es6.js

...ofiles/demo_umami/themes/umami/js/user.theme.temporary.js

core/profiles/demo_umami/themes/umami/umami.info.yml

core/profiles/demo_umami/themes/umami/umami.libraries.yml

...Drupal/KernelTests/Core/Theme/ConfirmClassyCopiesTest.php

core/themes/bartik/bartik.info.yml

core/themes/bartik/bartik.libraries.yml

core/themes/bartik/css/components/user.css

core/themes/bartik/js/ajax.temporary.es6.js

core/themes/bartik/js/ajax.temporary.js

core/themes/bartik/js/user.theme.temporary.es6.js

core/themes/bartik/js/user.theme.temporary.js

core/themes/claro/claro.info.yml

core/themes/claro/claro.libraries.yml

core/themes/claro/js/ajax.temporary.es6.js

core/themes/claro/js/ajax.temporary.js

core/themes/seven/css/components/user.css