[BUG] Node label distance is not affected by zoom

[mateodurante]

Describe the bug
When you do zoom in the distance on pixels between the node and his label is bigger, the opposite on zoom out until overlap items.

zoom out:

normal:

zoom in:

To Reproduce
Steps to reproduce the behavior:

1. Create a node
2. Do long zoom in or zoom out

Expected behavior
When you do zoom in or zoom out the distance of the node and his label must be always at same pixels distance

Screenshots
zoom in:

zoom out:

Desktop (please complete the following information):

• OS: Ubuntu 20
• CORE Version 8.1.0