core: Roborock startup log error

The problem

Since 2023.10.0b0 once HA starts this issue appeaes in the logs

2023-09-28 11:34:12.847 WARNING (MainThread) [py.warnings] /usr/src/homeassistant/homeassistant/helpers/entity_platform.py:495: RuntimeWarning: coroutine 'EntityPlatform._async_add_entity' was never awaited
tasks = [
2023-09-28 11:34:12.849 ERROR (MainThread) [homeassistant] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 495, in async_add_entities
tasks = [
^
File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 495, in <listcomp>
tasks = [
^
File "/usr/src/homeassistant/homeassistant/components/roborock/sensor.py", line 211, in <genexpr>
if description.value_fn(coordinator.roborock_device_info.props) is not None
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/src/homeassistant/homeassistant/components/roborock/sensor.py", line 150, in <lambda> value_fn=lambda data: data.last_clean_record.begin_datetime,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'begin_datetime'

What version of Home Assistant Core has the issue?

2023.10.0b0

What was the last working version of Home Assistant Core?

2023.9

What type of installation are you running?

Home Assistant OS

Integration causing the issue

roborock

Link to integration documentation on our website

https://www.home-assistant.io/integrations/roborock/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response