gh-102192: use PyErr_SetHandledException instead of the legacy PyErr_SetExcInfo

[iritkatriel]

• Issue: Replace Fetch/Restore etc by the new exception APIs #102192

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @iritkatriel for commit 6c77b12 🤖

If you want to schedule another build, you need to add the 🔨 test-with-refleak-buildbots label again.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x RHEL8 3.x has failed when building commit 848bdbe.

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/all/#builders/509/builds/3847) and take a look at the build logs.
4. Check if the failure is related to this commit (848bdbe) 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/all/#builders/509/builds/3847

Failed tests:

• test_asyncio

Failed subtests:

• test_subprocess_consistent_callbacks - test.test_asyncio.test_subprocess.SubprocessThreadedWatcherTests.test_subprocess_consistent_callbacks

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

== Tests result: FAILURE then FAILURE ==

415 tests OK.

10 slowest tests:

• test_tools: 3 min 16 sec
• test_concurrent_futures: 2 min 31 sec
• test_multiprocessing_spawn: 2 min 8 sec
• test_math: 1 min 31 sec
• test_multiprocessing_forkserver: 1 min 28 sec
• test_multiprocessing_fork: 1 min 16 sec
• test_gdb: 1 min 16 sec
• test_asyncio: 1 min 16 sec
• test_signal: 1 min 12 sec
• test_capi: 1 min 1 sec

1 test failed:
test_asyncio

17 tests skipped:
test_devpoll test_ioctl test_kqueue test_launcher test_msilib
test_nis test_peg_generator test_perf_profiler test_startfile
test_tix test_tkinter test_ttk test_winconsoleio test_winreg
test_winsound test_wmi test_zipfile64

1 re-run test:
test_asyncio

Total duration: 7 min 14 sec

Click to see traceback logs

Traceback (most recent call last):
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z/build/Lib/test/test_asyncio/test_subprocess.py", line 770, in test_subprocess_consistent_callbacks
    self.loop.run_until_complete(main())
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z/build/Lib/asyncio/base_events.py", line 664, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/home/dje/cpython-buildarea/3.x.edelsohn-rhel8-z/build/Lib/test/test_asyncio/test_subprocess.py", line 762, in main
    self.assertEqual(events, [
AssertionError: Lists differ: [('pi[29 chars]t'), 'pipe_connection_lost', ('pipe_data_recei[57 chars]ted'] != [('pi[29 chars]t'), ('pipe_data_received', 2, b'stderr'), 'pi[57 chars]ted']