Fix suspect test ladders
Fix suspect test ladders

We deployed a new suspect test system a few months ago, but we had to
back out of it when it didn't work as expected. This fixes the bug that
made it not work. In the future, setting `rated: "[Gen 8] Format Name"`
in `formats.ts` will cause ladder games in that format to actually
go in the specified format's ladder, instead of its own.

svivian/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,Zarel/Pokemon-Showdown,svivian/Pokemon-Showdown,xfix/Pokemon-Showdown,Zarel/Pokemon-Showdown,xfix/Pokemon-Showdown,xfix/Pokemon-Showdown,Zarel/Pokemon-Showdown,xfix/Pokemon-Showdown,svivian/Pokemon-Showdown,xfix/Pokemon-Showdown,svivian/Pokemon-Showdown,sirDonovan/Pokemon-Showdown,svivian/Pokemon-Showdown