Fix tag score not being updated when the tag is trending (mastodon#11465)

Author: Gargron

app/models/trending_tags.rb

@@ -49,7 +49,7 @@ def increment_vote!(tag_id, at_time)
       else
         score = ((observed - expected)**2) / expected
         added = redis.zadd(key, score, tag_id.to_s)
-        bump_tag_score!(tag_id) if added == 1
+        bump_tag_score!(tag_id) if added
       end
 
       redis.expire(key, EXPIRE_TRENDS_AFTER)