DataFrame.index setter is very restrictive compared to DataFrame.columns

[loicdiridollou]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce

1. Provide a minimal runnable pandas example that is not properly checked by the stubs.
2. Indicate which type checker you are using (mypy or pyright).
3. Show the error message received from that type checker while checking your example.

import pandas as pd

df = pd.DataFrame(data={"col1": [1, 2], "col2": [3, 4]})
df.index = [3, 4]

Error message is:

Cannot assign to attribute "index" for class "DataFrame"   "list[int]" is not assignable to "Index[Any]"

Please complete the following information:

• OS: MacOS
• OS Version 15
• python version 3.13
• version of type checker 1.17.1
• version of installed pandas-stubs main

Additional context
Add any other context about the problem here.