Add data-nosnippet so Google doesn't use trending posts in snippets for / (#25279)

app/javascript/mastodon/features/explore/index.jsx

@@ -67,7 +67,7 @@ class Explore extends PureComponent {
           <Search />
         </div>
 
-        <div className='scrollable scrollable--flex'>
+        <div className='scrollable scrollable--flex' data-nosnippet>
           {isSearching ? (
             <SearchResults />
           ) : (