Fix notifications borders (#7140)

src/view/com/notifications/NotificationFeed.tsx

@@ -134,7 +134,7 @@ export function NotificationFeed({
           highlightUnread={filter === 'all'}
           item={item}
           moderationOpts={moderationOpts!}
-          hideTopBorder={index === 0 && item.notification.isRead}
+          hideTopBorder={index === 0}
         />
       )
     },

src/view/com/pager/TabBar.web.tsx

@@ -145,7 +145,7 @@ export function TabBar({
 const desktopStyles = StyleSheet.create({
   outer: {
     flexDirection: 'row',
-    width: 598,
+    width: 600,
   },
   contentContainer: {
     flexGrow: 1,