Remove focus-visible polyfill (#11677)

* Remove focus-visible polyfill

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update snapshots

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

---------

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/components/views/context_menus/SpaceContextMenu-test.tsx

@@ -17,7 +17,6 @@ limitations under the License.
 import React from "react";
 import { MatrixClient, Room } from "matrix-js-sdk/src/matrix";
 import { Mocked, mocked } from "jest-mock";
-import "focus-visible"; // to fix context menus
 import { prettyDOM, render, RenderResult, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 

test/components/views/context_menus/__snapshots__/SpaceContextMenu-test.tsx.snap

@@ -30,8 +30,7 @@ exports[`<SpaceContextMenu /> renders menu correctly 1`] = `
           >
             <li
               aria-label="Space home"
-              class="mx_AccessibleButton mx_IconizedContextMenu_item focus-visible"
-              data-focus-visible-added=""
+              class="mx_AccessibleButton mx_IconizedContextMenu_item"
               role="menuitem"
               tabindex="0"
             >