fix(primary-ip): format IPv6 properly in describe

[phm07]

This PR fixes the wrong formatting and adds a corresponding test.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.89%. Comparing base (b0dd537) to head (9448f22).
⚠️ Report is 13 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1451      +/-   ##
==========================================
+ Coverage   72.80%   72.89%   +0.09%     
==========================================
  Files         300      300              
  Lines       11104    11127      +23     
==========================================
+ Hits         8084     8111      +27     
+ Misses       2120     2118       -2     
+ Partials      900      898       -2     

Flag	Coverage Δ
e2e	51.36% <0.00%> (+0.11%)	⬆️
unit	67.76% <100.00%> (+0.02%)	⬆️

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