Typeshed cherry-pick: Use int|Any for types.FrameType.f_lineno (#6935)

[JukkaL]

This fixes some regressions.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

rich (https://github.com/willmcgugan/rich)
- rich/console.py:1818: error: Incompatible return value type (got "Tuple[str, Optional[int], Dict[str, Any]]", expected "Tuple[str, int, Dict[str, Any]]")

pytest (https://github.com/pytest-dev/pytest)
- src/_pytest/_code/code.py:140: error: Unsupported operand types for - ("None" and "int")  [operator]
- src/_pytest/_code/code.py:140: note: Left operand is of type "Optional[int]"
- testing/deprecated_test.py:125: error: Unsupported operand types for > ("int" and "None")  [operator]
- testing/deprecated_test.py:125: note: Left operand is of type "Optional[int]"
- testing/deprecated_test.py:125: error: Unsupported operand types for < ("int" and "None")  [operator]
- testing/deprecated_test.py:125: note: Right operand is of type "Optional[int]"