Notable changes in Python 3.14

[adang1345]

Notes to self for when I start working on Python 3.14 on Windows 7.

Test the pathlib.Path.copy() method introduced in python/cpython#119058 and modified in python/cpython@f09d184. It uses CopyFile2(), which is not available on Windows 7, but it appears to have a fallback when it's not available. I think this method will work fine on Windows 7, but I should test it.
(Alternatively, see https://gitlab.winehq.org/wine/wine/-/merge_requests/5020, which appears to implement all the parts of CopyFile2() that Python uses.)

Update patches to account for python/cpython@fac5e7a, which raises the minimum supported version to Windows 10. If the UCRT component is removed in a future change, then add it back.

Test python/cpython@d7f703d because SetThreadDescription() and GetThreadDescription() are not available.

Test the zlib module because of python/cpython@63a638c.