ZHA thermostat does not accept temperature below 5°C after update to 2024.8.x

The problem

After the update to 2024.8.x, the Zigbee thermostats no longer accept temperatures below 5.0°C. This is not an error in principle, as the minimum heating setpoint limit on the devices is set to 5.0°C. The limits were already set this way before, but were apparently ignored until then.

The real problem now is that these limits cannot be changed. Any attempt to enter a value other than 5.0°C is acknowledged with the error message "'NoneType' object is not iterable". The same error occurs with the maximum limit.

I only use Tuya devices: TS0601 from _TZE200_hue3yfsn

When I try to change the limit, the following entry appears in the log:

2024-08-31 10:48:07.535 ERROR (MainThread) [homeassistant.components.websocket_api.http.connection] [547206503232] Unexpected exception
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 241, in handle_call_service
    response = await hass.services.async_call(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2763, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2806, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 999, in entity_service_call
    single_response = await _handle_entity_call(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 1071, in _handle_entity_call
    result = await task
             ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/number/__init__.py", line 120, in async_set_value
    await entity.async_set_native_value(native_value)
  File "/usr/src/homeassistant/homeassistant/components/zha/helpers.py", line 1289, in handler
    return await func(self, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/zha/number.py", line 88, in async_set_native_value
    await self.entity_data.entity.async_set_native_value(value=value)
  File "/usr/local/lib/python3.12/site-packages/zha/application/platforms/number/__init__.py", line 334, in async_set_native_value
    await self._cluster_handler.write_attributes_safe(
  File "/usr/local/lib/python3.12/site-packages/zha/zigbee/cluster_handlers/__init__.py", line 613, in write_attributes_safe
    res = await self.write_attributes(attributes, manufacturer=manufacturer)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/zha/zigbee/cluster_handlers/__init__.py", line 84, in wrapper
    return await RETRYABLE_REQUEST_DECORATOR(func)(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/zigpy/util.py", line 136, in retry
    return await func()
           ^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/zhaquirks/tuya/__init__.py", line 764, in write_attributes
    manufacturer_attrs.update(new_attrs)
TypeError: 'NoneType' object is not iterable

What version of Home Assistant Core has the issue?

2024.8.3

What was the last working version of Home Assistant Core?

2024.6.4

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Zigbee Home Automation

Link to integration documentation on our website

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

Diagnostics information

home-assistant_zha_2024-08-31_Error_TH.txt

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

home-assistant / core