[Glitch] Fix reply icon display in picture-in-picture footer

Port 1cba91d6d1 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/picture_in_picture/components/footer.jsx

@@ -181,7 +181,7 @@ class Footer extends ImmutablePureComponent {
 
     if (status.get('in_reply_to_id', null) === null) {
       replyIcon = 'reply';
-      replyIconComponent = RepeatIcon;
+      replyIconComponent = ReplyIcon;
       replyTitle = intl.formatMessage(messages.reply);
     } else {
       replyIcon = 'reply-all';