Update raids_list.php

Initialize keys array

Author: Ninjasoturi

mods/raids_list.php

@@ -17,6 +17,7 @@
 $raid = get_raid($raidId);
 
 // Create keys array.
+$keys = [];
 // Probably unused feature. Will fix if someone needs this
 // $keys[][] = button(getTranslation('expand'), ['vote_refresh', 'r' => $raid['id']]);
 if($botUser->raidaccessCheck($raidId, 'pokemon', true)) {