[IMP] queue_job: Set doctest.REPORT_ONLY_FIRST_FAILURE option.

[amh-mw]

This improves doctest output from useless

Traceback (most recent call last):
  File "/mnt/extra-addons/oca/queue/queue_job/tests/test_runner_channels.py", line 15, in test_doctest
    doctest.testmod(
  File "/usr/lib/python3.12/doctest.py", line 1998, in testmod
    runner.run(test)
  File "/usr/lib/python3.12/doctest.py", line 1886, in run
    r = DocTestRunner.run(self, test, compileflags, out, False)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/doctest.py", line 1525, in run
    return self.__run(test, compileflags, out)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/doctest.py", line 1426, in __run
    self.report_failure(out, test, example, got)
  File "/usr/lib/python3.12/doctest.py", line 1895, in report_failure
    raise DocTestFailure(test, example, got)
doctest.DocTestFailure: <DocTest odoo.addons.queue_job.jobrunner.channels.ChannelManager.simple_configure from /mnt/extra-addons/oca/queue/queue_job/jobrunner/channels.py:906 (12 examples)>

to useful

**********************************************************************
File "/mnt/extra-addons/oca/queue/queue_job/jobrunner/channels.py", line 925, in odoo.addons.queue_job.jobrunner.channels.ChannelManager.simple_configure
Failed example:
    cm.get_channel_by_name('seq').capacity
Expected:
    2
Got:
    1
**********************************************************************
1 items had failures:
   1 of  12 in odoo.addons.queue_job.jobrunner.channels.ChannelManager.simple_configure
***Test Failed*** 1 failures.

[OCA-git-bot]

Hi @guewen, @sbidoul,
some modules you are maintaining are being modified, check this out!