Remove Safari 14.0 patch for delegatesFocus (#21247)

cast/src/launcher/entrypoint.ts

@@ -1,4 +1,3 @@
-import "../../../src/resources/safari-14-attachshadow-patch";
 import "./layout/hc-connect";
 
 import("../../../src/resources/ha-style");

demo/src/entrypoint.ts

@@ -1,4 +1,3 @@
-import "../../src/resources/safari-14-attachshadow-patch";
 import "./util/is_frontpage";
 import "./ha-demo";
 

hassio/src/entrypoint.ts

@@ -1,6 +1,5 @@
 // Compat needs to be first import
 import "../../src/resources/compatibility";
-import "../../src/resources/safari-14-attachshadow-patch";
 import "./hassio-main";
 
 import("../../src/resources/ha-style");

src/entrypoints/authorize.ts

@@ -1,7 +1,6 @@
 // Compat needs to be first import
 import "../resources/compatibility";
 import "../auth/ha-authorize";
-import "../resources/safari-14-attachshadow-patch";
 
 import("../resources/ha-style");
 import("@polymer/polymer/lib/utils/settings").then(

src/entrypoints/core.ts

@@ -25,7 +25,6 @@ import { subscribePanels } from "../data/ws-panels";
 import { subscribeThemes } from "../data/ws-themes";
 import { subscribeUser } from "../data/ws-user";
 import type { ExternalAuth } from "../external_app/external_auth";
-import "../resources/safari-14-attachshadow-patch";
 
 window.name = MAIN_WINDOW_NAME;
 (window as any).frontendVersion = __VERSION__;

src/entrypoints/custom-panel.ts

@@ -1,6 +1,5 @@
 // Compat needs to be first import
 import "../resources/compatibility";
-import "../resources/safari-14-attachshadow-patch";
 
 import { CSSResult } from "lit";
 import { fireEvent } from "../common/dom/fire_event";

src/entrypoints/onboarding.ts

@@ -1,7 +1,6 @@
 // Compat needs to be first import
 import "../resources/compatibility";
 import "../onboarding/ha-onboarding";
-import "../resources/safari-14-attachshadow-patch";
 
 import("../resources/ha-style");
 import("@polymer/polymer/lib/utils/settings").then(

src/resources/safari-14-attachshadow-patch.ts

@@ -1,17 +0,0 @@
-// https://github.com/home-assistant/frontend/pull/7031
-
-export {}; // for Babel to treat as a module
-
-const isSafari14 = /^((?!chrome|android).)*version\/14\.0\s.*safari/i.test(
-  navigator.userAgent
-);
-
-if (isSafari14) {
-  const origAttachShadow = window.Element.prototype.attachShadow;
-  window.Element.prototype.attachShadow = function (init) {
-    if (init && init.delegatesFocus) {
-      delete init.delegatesFocus;
-    }
-    return origAttachShadow.apply(this, [init]);
-  };
-}