fix: remove list from putpixel value type annotation

[muhamedfazalps]

The putpixel method's value parameter was typed as accepting list[int], but the underlying C code only accepts tuple or int, causing a TypeError at runtime when a list is passed.

Fixes #9584

[radarhere]

This is a similar to #9586, except only changing the type hint, without the deprecation.

[radarhere]

I think this is incomplete. It changes the type hint, but doesn't update

Pillow/src/PIL/Image.py

Line 2194 in 767a3f1

and isinstance(value, (list, tuple))

so putpixel() does still support lists for P and PA modes, it just stops advertising it through the type hint.

This PR changes the method from
saying it accepts lists, but only working for P and PA modes
to
saying it doesn't accept lists, but actually still accepting them for P and PA modes. This is still incorrect, just in a different way.

My PR removes the type hint to stop advertising the functionality, deprecates the use of lists, and then a year after deprecation, the functionality can be removed for P and PA modes.