Job files API: FileNotFoundError: [Errno 2] No such file or directory: ''

[galaxyproject-sentryintegration]

Suddenly had a burst of 361 requests that didn't send a destination path ...

Sentry Issue: GALAXY-MAIN-W5S

FileNotFoundError: [Errno 2] No such file or directory: ''
  File "galaxy/web/framework/decorators.py", line 346, in decorator
    rval = func(self, trans, *args, **kwargs)
  File "galaxy/webapps/galaxy/api/job_files.py", line 132, in create
    util.safe_makedirs(target_dir)
  File "galaxy/util/path/__init__.py", line 138, in safe_makedirs
    makedirs(path)
  File "<frozen os>", line 225, in makedirs

Uncaught exception in exposed API method:

[mvdbeek]

Should be fixed in #18342