refactor: more feed parsing tweaks (#3748)

lib/FeedExpander.php

@@ -22,6 +22,11 @@ abstract class FeedExpander extends BridgeAbstract
         if ($xmlString === '') {
             throw new \Exception(sprintf('Unable to parse xml from `%s` because we got the empty string', $url), 10);
         }
+        // prepare/massage the xml to make it more acceptable
+        $badStrings = [
+            '»',
+        ];
+        $xmlString = str_replace($badStrings, '', $xmlString);
         $feedParser = new FeedParser();
         $this->feed = $feedParser->parseFeed($xmlString);
         $items = array_slice($this->feed['items'], 0, $maxItems);