Invert ops do invert on the input and the ouput

Consider this script :

```python
# @Dataset data
# @ImageJ ij

out = ij.dataset().create(data)
out = ij.op().run("image.invert", data, out)
ij.ui().show(out)
```

Both `data` and `out` are inverted.

Is this a bug or am I doing something wrong ?

PS: `data` actually does not display the inverted image until you click on it.

Reproduce the issue with the Python script shown in the report, focusing on the image.invert operation and the behavior of data and out. Inspect the relevant ImageJ Ops implementation and existing tests; the fix is complete when only the output is inverted and the input remains unchanged, including after it is displayed.

Written by the indexing model from the issue text.