Correct accessibility labels for unread rooms in spotlight (#9003)

* Correct accessibility labels for unread rooms in spotlight
* Improve public room result accessibility
* Improve room result accessibility

src/components/views/rooms/RoomContextDetails.tsx

@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { Room } from "matrix-js-sdk/src/matrix";
+import React, { ComponentPropsWithoutRef, ElementType } from "react";
+
+import { roomContextDetails } from "../../../utils/i18n-helpers";
+
+type Props<T extends ElementType> = ComponentPropsWithoutRef<T> & {
+    component?: T;
+    room: Room;
+};
+
+export function RoomContextDetails<T extends ElementType>({ room, component: Component = "div", ...other }: Props<T>) {
+    const contextDetails = roomContextDetails(room);
+    if (contextDetails) {
+        return <Component
+            {...other}
+            aria-label={contextDetails.ariaLabel}
+        >
+            { contextDetails.details }
+        </Component>;
+    }
+
+    return null;
+}