Update location text fallback and test it (#7408)

src/components/views/rooms/CollapsibleButton.tsx

@@ -0,0 +1,34 @@
+/*
+Copyright 2021 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 React, { ComponentProps } from 'react';
+
+import AccessibleTooltipButton from "../elements/AccessibleTooltipButton";
+
+export interface ICollapsibleButtonProps
+    extends ComponentProps<typeof AccessibleTooltipButton>
+{
+    narrowMode: boolean;
+    title: string;
+}
+
+export const CollapsibleButton = ({ narrowMode, title, ...props }: ICollapsibleButtonProps) => {
+    return <AccessibleTooltipButton
+        {...props}
+        title={narrowMode ? undefined : title}
+        label={narrowMode ? title : undefined}
+    />;
+};