ruff

4e3bec27 - [ty] Optional lower/upper bounds in individual constraints (#25435)

[ty] Optional lower/upper bounds in individual constraints (#25435) This is a simpler alternative to #22400. Instead of completely reworking our representation of individual constraints, we just wrap the lower and upper bounds in `Option`. If either is `None`, that bound is _missing_, as opposed to having an explicit `Never` lower bound / `object` upper bound. This is much less invasive of a change! Closes https://github.com/astral-sh/ty/issues/3558