gh-124873: Skip timerfd tests on Android

[mhsmith]

See #124873 (comment).

• Issue: Intermittent timerfd failure on Android #124873

[vstinner]

LGTM

[miss-islington-app]

Thanks @mhsmith for the PR, and @vstinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-127290 is a backport of this pull request to the 3.13 branch.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 FreeBSD14 3.13 has failed when building commit 6a06634.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1481/builds/765) and take a look at the build logs.
4. Check if the failure is related to this commit (6a06634) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1481/builds/765

Failed tests:

• test_threading

Failed subtests:

• test_start_new_thread_failed - test.test_threading.ThreadTests.test_start_new_thread_failed

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "/home/buildbot/buildarea/3.13.opsec-fbsd14/build/Lib/test/test_threading.py", line 1205, in test_start_new_thread_failed
    self.assertEqual(out, b'ok')
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^
AssertionError: b"skipshouldn't be printed" != b'ok'

[vstinner]

test_start_new_thread_failed - test.test_threading.ThreadTests.test_start_new_thread_failed

Unrelated failure. It should be fixed by #127299.