fix(admin-ui): Fix styling of some dialogs with tabs

packages/admin-ui/src/lib/core/src/shared/components/tabbed-custom-fields/tabbed-custom-fields.component.scss

@@ -1,7 +1,3 @@
 :host {
     display: contents;
 }
-
-::ng-deep clr-tabs .btn.btn-link {
-    box-shadow: none;
-}

packages/admin-ui/src/lib/static/styles/global/_overrides.scss

@@ -112,6 +112,10 @@ button.icon-button {
 .btn.btn-link.nav-link {
     background-color: transparent;
 }
+clr-tabs .btn.btn-link {
+    box-shadow: none;
+}
+
 
 .alert {
     border: 1px solid var(--color-primary-150);