Adjust force directed 2d graph spacing

[ghsteff]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[x] Other... Please describe: Improvement

What is the new behavior?

Better spacing on forceDirected2d graphs

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

e.g. of 1000 nodes

BEFORE

AFTER

This also affected some medium sized graphs like below. The "before" debatably looks better here tho 😅

BEFORE

AFTER

[amcdnl]

Since you are re-assigning - why not just make if/else to save on init of the object you throw away.