Fixes going to oldest unread story when viewing

ts/components/StoryViewer.stories.tsx

@@ -39,7 +39,6 @@ function getDefaultProps(): PropsType {
     preferredReactionEmoji: ['❤️', '👍', '👎', '😂', '😮', '😢'],
     queueStoryDownload: action('queueStoryDownload'),
     renderEmojiPicker: () => <div />,
-    selectedStoryIndex: 0,
     stories: [
       {
         attachment: fakeAttachment({
@@ -109,24 +108,6 @@ story.add('Multi story', () => {
   );
 });
 
-story.add('So many stories (start on story 4)', () => {
-  const sender = getDefaultConversation();
-  return (
-    <StoryViewer
-      {...getDefaultProps()}
-      selectedStoryIndex={5}
-      stories={Array(20).fill({
-        attachment: fakeAttachment({
-          url: '/fixtures/snow.jpg',
-        }),
-        messageId: '123',
-        sender,
-        timestamp: Date.now(),
-      })}
-    />
-  );
-});
-
 story.add('Caption', () => (
   <StoryViewer
     {...getDefaultProps()}