The swap operators use `Node.location` for location calculations. This expresses
a node's location relative to their parent frames.
This can lead to inaccurate location calculations if nodes have different parent
frames. This was partly addressed by using the custom `temporary_unframe`
context manager. However, that method is sensitive to the order of steps
executed by the operator, making it easy to accidentally let a few location bugs
go through.
This patch fixes the issue by using `Node.location_absolute` which gives the
node's absolute location. This also gets rid of the need for
`temporary_unframe`, and makes the location calculations more straightforward.
Pull Request: https://projects.blender.org/blender/blender/pulls/147424
1a6d932fbd