Move link notification to the conversation hero

ts/state/smart/InstallScreen.tsx

@@ -1,4 +1,4 @@
-// Copyright 2021 Signal Messenger, LLC
+// Copyright 2021-2022 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import type { ComponentProps, ReactElement } from 'react';
@@ -193,8 +193,6 @@ export function SmartInstallScreen(): ReactElement {
         throw new Error('Cannot confirm number; the component was unmounted');
       }
 
-      window.Signal.Util.postLinkExperience.start();
-
       return result;
     };