Addresses https://github.com/ppy/osu/pull/26080#issuecomment-1868833214.
ModBlockFail
Was only being used by `NoFail` now.
Allows the Relax mod to fail, and remove NF/PF/SD mod exclusion ref: https://github.com/ppy/osu/discussions/13229
ModFailCondition
I think they were intended to be this way from the beginning.