I received the following error on trying to perform a Batch Export using the Batch Export plugin in Krita 6.0.0-beta1:

```
Traceback (most recent call last):

  File "C:\Program Files\Krita (x64)\share\krita\pykrita\batch_exporter\batch_exporter.py", line 61, in exportAllLayers
    kickstart(it)
    ~~~~~~~~~^^^^

  File "C:\Program Files\Krita (x64)\share\krita\pykrita\batch_exporter\Utils\__init__.py", line 13, in kickstart
    deque(it, maxlen=0)
    ~~~~~^^^^^^^^^^^^^^

  File "C:\Program Files\Krita (x64)\share\krita\pykrita\batch_exporter\Utils\__init__.py", line 9, in <lambda>
    return lambda *a: f(*reversed(a))
                      ~^^^^^^^^^^^^^^

  File "C:\Program Files\Krita (x64)\share\krita\pykrita\batch_exporter\Infrastructure.py", line 290, in save
    img = nodeToImage(self)

  File "C:\Program Files\Krita (x64)\share\krita\pykrita\batch_exporter\Infrastructure.py", line 30, in nodeToImage
    if not icc_profile and self.inherit:
                           ^^^^

NameError: name 'self' is not defined
```

The merge request that seems to have broken it is https://invent.kde.org/graphics/krita/-/merge_requests/2446 where icc profile support was added and seems to now be required to avoid the error.

Steps to reproduce:
* Try and do any kind of batch export without the "icc=" property.
* Receive the above traceback.

Bugfix:
I believe this is simply a typo in the codebase. On line 30, instead of trying to access `self.inherit` the plugin should be attempting to access `wnode.inherit`