Change referrer policy to be controlled by header in web UI (#33214)

app/javascript/mastodon/features/account/components/header.jsx

@@ -421,7 +421,7 @@ class Header extends ImmutablePureComponent {
 
         <div className='account__header__bar'>
           <div className='account__header__tabs'>
-            <a className='avatar' href={account.get('avatar')} rel='noopener noreferrer' target='_blank' onClick={this.handleAvatarClick}>
+            <a className='avatar' href={account.get('avatar')} rel='noopener' target='_blank' onClick={this.handleAvatarClick}>
               <Avatar account={suspended || hidden ? undefined : account} size={90} />
             </a>