Disable _TqdmCloser darwin workaround for Python >= 3.14.2

[olzhasar-reef]

_TqdmCloser is a workaround for leaked semaphores error happening when
using tqdm on MacOS and Python >= 3.11. The issue does not seem to
appear in Python 3.14.2, so we disable the workaround for newer Python
versions

[olzhasar-reef]

After enabling integration tests for macos - Python 3.13 pair, the tqdm closer test is now failing there too, which implies that it has something to do with the MacOS version as opposed to Python version.

Here is a recent job (from last month) where the test was passing on MacOS and Python 3.13:
https://github.com/Backblaze/B2_Command_Line_Tool/actions/runs/19467044882/job/55704518865

It used the following image:

  Operating System
  macOS
  15.7.1
  Image: macos-15-arm64
  Version: 20251104.0104

The last workflow (where the test fails) uses:

  Operating System
  macOS
  15.7.2
  Image: macos-15-arm64
  Version: 20251210.0068.1

[olzhasar-reef]

MacOS 15.7.2 release notes do mention some fixes of memory-related issues on the Kernel level, that potentially could have resolved the tqdm leaked semaphore objects problem

[olzhasar-reef]

The second part of the test does not make much sense now that the newer MacOS image is used in the CI

[mlech-reef]

Codewise, it looks ok. If the CI proves everything works on 15. 7. 2, it lgtm

[olzhasar-reef]

Yeap, the remaining test that checks for a clean output without warnings passes on MacOS 5.17.2.
So we get a clean output while TqdmCloser is disabled there:

https://github.com/Backblaze/B2_Command_Line_Tool/actions/runs/20351177710/job/58743915427?pr=1128

On the other hand, on my machine with MacOs 5.16.1, there are still warnings with TqdmCloser disabled and no warnings when it works.
So everything seems to work as expected.