Pulsar queued_python potentially isn't executing jobs on my machine.

Reported in admins matrix,

app.yml

```
---
dependency_resolution:
resolvers:
- auto_init: true
auto_install: true
type: conda
job_metrics_config_file: job_metrics_conf.yml
min_polling_interval: 0.5
persistence_directory: /mnt/pulsar/files/persisted_data
private_token: asdf
staging_directory: /mnt/pulsar/files/staging
tool_dependency_dir: /mnt/pulsar/deps
managers:
_default_:
type: queued_python
num_concurrent_jobs: 1
```

but my jobs don't execute:

```
Oct 09 16:51:03 worker1 uwsgi[66861]: 2024-10-09 16:51:03,445 DEBUG [pulsar.managers.base][uWSGIWorker1Core0] job_id: 16 - checking tool file cutWrapper.pl
Oct 09 16:51:03 worker1 uwsgi[66861]: 2024-10-09 16:51:03,446 DEBUG [galaxy.tool_util.deps][uWSGIWorker1Core0] Using dependency perl version 5.26 of type conda
Oct 09 16:51:03 worker1 uwsgi[66861]: [pid: 66861|app: 0|req: 610/610] 145.38.195.22 () {32 vars in 5437 bytes} [Wed Oct 9 16:51:03 2024] POST /managers/_default_/jobs/16/submit?command_line=%2Fbin%2Fbash+%2Fm..........
```

Nate suggested py-spy

```
root@worker1:/mnt/pulsar# py-spy dump --pid 66861
Process 66861: /mnt/pulsar/venv/bin/uwsgi --ini-paste /mnt/pulsar/config/server.ini
Python v3.10.12 (/mnt/pulsar/venv/bin/uwsgi)

Thread 0x7F93FB7D1040 (active): "uWSGIWorker1Core0"
Thread 0x7F93F35FF640 (idle): "Thread-1 (run_next)"
wait (threading.py:320)
get (queue.py:171)
run_next (pulsar/managers/queued.py:83)
run (threading.py:953)
_bootstrap_inner (threading.py:1016)
_bootstrap (threading.py:973)
```

and I can verify that things get added to the queue, but nothing seems to be read from the queue.

```
pulsar-check --private_token=asdf --debug


INFO:pulsar.client.manager:Setting Pulsar client class to standard, non-caching variant.

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/t/script.py] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/dataset_0.dat] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/dataset_0_files/input_subdir/extra] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/metadata/12312231231231.dat] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/w/config.txt] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/m/metadata_test123] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/idx/seq/human_full_seqs] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/idx/bwa/human.fa.fai] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/idx/bwa/human.fa] (action_type: [transfer])

DEBUG:pulsar.client.client:Uploading path [/tmp/pulsar-check-client.dn8jifhl/w/config.txt] (action_type: [message])

```

swapping to `queued_condor` and making no other changes, enabled jobs to execute.

Running the latest pulsar:

```
(venv) root@worker1:/home/hrasche2# pip freeze | grep pulsar
pulsar-app==0.15.6
```

In this case I'd rather not install htcondor if it isn't necessary.