Emoji Picker: Fix missing all emojis (#1378)

src/components/middle/composer/EmojiCategory.tsx

@@ -58,6 +58,10 @@ const EmojiCategory: FC<OwnProps> = ({
       >
         {shouldRender && category.emojis.map((name) => {
           const emoji = allEmojis[name];
+          // Recent emojis may contain emoticons that are no longer in the list
+          if (!emoji) {
+            return undefined;
+          }
           // Some emojis have multiple skins and are represented as an Object with emojis for all skins.
           // For now, we select only the first emoji with 'neutral' skin.
           const displayedEmoji = 'id' in emoji ? emoji : emoji[1];