New option for control over update downloads

ts/components/DialogExpiredBuild.tsx

@@ -0,0 +1,37 @@
+// Copyright 2020-2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import React from 'react';
+
+import { LocalizerType } from '../types/Util';
+
+type PropsType = {
+  hasExpired: boolean;
+  i18n: LocalizerType;
+};
+
+export const DialogExpiredBuild = ({
+  hasExpired,
+  i18n,
+}: PropsType): JSX.Element | null => {
+  if (!hasExpired) {
+    return null;
+  }
+
+  return (
+    <div className="LeftPaneDialog LeftPaneDialog--error">
+      <div className="LeftPaneDialog__message">
+        {i18n('expiredWarning')}{' '}
+        <a
+          className="LeftPaneDialog__action-text"
+          href="https://signal.org/download/"
+          rel="noreferrer"
+          tabIndex={-1}
+          target="_blank"
+        >
+          {i18n('upgrade')}
+        </a>
+      </div>
+    </div>
+  );
+};