Revert "web: Safari fixes merge branch (#14181)" (#14211)

web/src/elements/tests/utils.ts

@@ -1,20 +1,19 @@
-import {
-    appendStyleSheet,
-    assertAdoptableStyleSheetParent,
-} from "@goauthentik/common/stylesheets.js";
-
 import { TemplateResult, render as litRender } from "lit";
 
 import AKGlobal from "@goauthentik/common/styles/authentik.css";
 import PFBase from "@patternfly/patternfly/patternfly-base.css";
 
+import { ensureCSSStyleSheet } from "../utils/ensureCSSStyleSheet.js";
+
 // A special version of render that ensures our style sheets will always be available
 // to all elements under test.  Ensures they look right during testing, and that any
 // CSS-based checks for visibility will return correct values.
 
 export const render = (body: TemplateResult) => {
-    assertAdoptableStyleSheetParent(document);
-
-    appendStyleSheet([PFBase, AKGlobal], document);
+    document.adoptedStyleSheets = [
+        ...document.adoptedStyleSheets,
+        ensureCSSStyleSheet(PFBase),
+        ensureCSSStyleSheet(AKGlobal),
+    ];
     return litRender(body, document.body);
 };