Cannot combine iterables of Callable classes

Bug Report

Combining iterables of Callable classes fails type checking. Initially observed in PyTorch, see https://github.com/pytorch/pytorch/pull/153558/files#diff-f6db1b80859c6471ce6e5eb1fc0e31ec094d550e328eeec49076fd346439de91R88

To Reproduce

https://mypy-play.net/?mypy=latest&python=3.13&gist=f51186b431defd72652a9dd1c7ca0b48

Expected Behavior

All assignments in the repro should validate.

Actual Behavior

main.py:15: error: Incompatible types in assignment (expression has type "list[object]", variable has type "list[Callable[..., Any]]")  [assignment]
main.py:20: error: Incompatible types in assignment (expression has type "list[object]", variable has type "list[Callable[..., Any]]")  [assignment]
Found 2 errors in 1 file (checked 1 source file)

Your Environment

• Mypy version used: 1.15.0, also observed on 1.14.0.
• Python version used: 3.13, observed as far back as 3.9 locally.
• See mypy-play.net repro for any other environment questions.

Start by running the linked mypy-play.net reproduction with mypy 1.15.0 and compare its diagnostics with the expected behavior. Trace the type-checking path for combining iterables of Callable classes; done means all assignments in the reproduction validate without the reported list[object] errors.