Fix pyfloat when only one bound is supplied

Fix pyfloat when only one bound is supplied: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). Faker().pyfloat(...) (in the Python provider) is broken in a few ways once you combine min value / max value with left digits / right digits . The generator should always…