[NAD] Fix edge infos

[flo-dup]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?
No

What kind of change does this PR introduce?
Bug fix

What is the current behavior?

• The text used for edge infos was red or green depending on the corresponding positive/negative value
• If the value is NaN, an out-arrow is still displayed

What is the new behavior (if this is a feature change)?

• The text used for edge infos is having the same colour as the corresponding arrow
• If the value is NaN, no arrow is drawn

Does this PR introduce a breaking change or deprecate an API?

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)
See the migration guide

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud