Spurious "Cannot inherit non-frozen dataclass from a frozen one" #14952

I'll produce a MWE when I have more time, but this is error is happening on all my projects that use dataclass_transform with frozen=True. For example, https://github.com/NeilGirdhar/tjax/

Simply clone, and run MyPy twice. Thus, it appears there's something missing from or wrongly added to the MyPy cache.

tjax/_src/fixed_point/simple_scan.py: note: In class "SimpleScan":
tjax/_src/fixed_point/simple_scan.py:15: error: Cannot inherit non-frozen dataclass from a frozen one  [misc]
    class SimpleScan(IteratedFunctionBase[Parameters, State, Trajectory, State],
...

CC @wesleywright