Fix invalid IP address assignment in Windows network plugin

[JSCU-CNI]

This PR fixes an issue in the Windows network plugin when constructing IP addresses of interfaces.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.91%. Comparing base (c70279d) to head (aa24906).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1143      +/-   ##
==========================================
+ Coverage   77.88%   77.91%   +0.02%     
==========================================
  Files         359      359              
  Lines       32663    32665       +2     
==========================================
+ Hits        25440    25450      +10     
+ Misses       7223     7215       -8     

Flag	Coverage Δ
unittests	77.91% <100.00%> (+0.02%)	⬆️

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[codspeed-hq]

CodSpeed Performance Report

Merging #1143 will not alter performance

_{Comparing JSCU-CNI:fix/windows-network-invalid-cidr (aa24906) with main (c70279d)}

Summary

✅ 3 untouched benchmarks