subscription-manager or yum/dnf fails with "module 'rhsm.ourjson' has no attribute 'loads'"

Issue

• subscription-manager or yum or dnf fails with "module 'rhsm.ourjson' has no attribute 'loads'":

  # subscription-manager status
  +-------------------------------------------+
    System Status Details
  +-------------------------------------------+
  module 'rhsm.ourjson' has no attribute 'loads'
  

• From /var/log/rhsm/rhsm.log:

  2023-09-27 07:14:57,819 [ERROR] subscription-manager:7813:MainThread @managercli.py:230 - module 'rhsm.ourjson' has no attribute 'loads'
  Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/subscription_manager/managercli.py", line 547, in main
  return_code = self._do_command()
  File "/usr/lib64/python3.6/site-packages/subscription_manager/managercli.py", line 3673, in _do_command
  service_status = entitlement.EntitlementService(None).get_status(on_date)
  File "/usr/lib64/python3.6/site-packages/rhsmlib/services/entitlement.py", line 61, in get_status
  sorter = inj.require(inj.CERT_SORTER, on_date)
  File "/usr/lib64/python3.6/site-packages/subscription_manager/injection.py", line 112, in require
  return FEATURES.require(feature, *args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/subscription_manager/injection.py", line 86, in require
  self.providers[feature] = provider(*args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cert_sorter.py", line 365, in __init__
  self.update_product_manager()
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cert_sorter.py", line 396, in update_product_manager
  consumer_identity.uuid
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cache.py", line 176, in update_check
  if self.has_changed() or force:
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cache.py", line 572, in has_changed
  cached = self._read_cache()
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cache.py", line 133, in _read_cache
  data = self._load_data(f)
  File "/usr/lib64/python3.6/site-packages/subscription_manager/cache.py", line 565, in _load_data
  return json.loads(json_str)
  AttributeError: module 'rhsm.ourjson' has no attribute 'loads'