[mania] Star Rating/pp bug

[Bestfast]

mania(?) bug with SR and PP:

1. try a map nomod, data.menu.bm.stats["SR"] and data.gameplay.pp["fc"] will return the right value
2. try a map with DT, data.menu.bm.stats["SR"] and data.gameplay.pp["fc"] will return 0
3. try a map with nomod again, and it returns 0 again

sometimes it just swaps DT value for nomod instead in step 3