fix(feed): "no posts" could appear in an empty board after the user published to it

src/views/board/board.tsx

@@ -165,7 +165,7 @@ const Board = () => {
 
   const Footer = () => {
     let footerContent;
-    if (feed.length === 0) {
+    if (combinedFeed.length === 0) {
       footerContent = t('no_threads');
     }
     if (hasMore || (subplebbitAddresses && subplebbitAddresses.length === 0)) {

src/views/catalog/catalog.tsx

@@ -187,7 +187,7 @@ const Catalog = () => {
         t('not_subscribed_to_any_board')
       ) : blocked ? (
         t('you_have_blocked_this_board')
-      ) : !hasMore && feed.length === 0 ? (
+      ) : !hasMore && combinedFeed.length === 0 ? (
         t('no_threads')
       ) : (
         hasMore && <LoadingEllipsis string={loadingStateString} />
@@ -209,7 +209,7 @@ const Catalog = () => {
     if (feed.length === 0) {
       if (blocked) {
         footerContent = t('you_have_blocked_this_board');
-      } else {
+      } else if (combinedFeed.length === 0) {
         footerContent = t('no_threads');
       }
     }