S3_1 rscompat: Set wonder upkeep to zero
Assuming we decide in #42994 that ruleset defined nonzero upkeep for wonders is just a soft error in S3_0, and hard error in S3_1, S3_1 compatibility mode ruleset loading should still load (and convert) 3.0 ruleset with the upkeep defined.
Assuming we decide in #42994 that ruleset defined nonzero upkeep for wonders is just a soft error in S3_0, and hard error in S3_1, S3_1 compatibility mode ruleset loading should still load (and convert) 3.0 ruleset with the upkeep defined.