fix: use safe set in client daemon network_topology.go

[fcgxz2003]

Use safe set in client daemon network_topology.go.

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.70%. Comparing base (1d96401) to head (786f835).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3276      +/-   ##
==========================================
- Coverage   52.71%   52.70%   -0.01%     
==========================================
  Files         192      192              
  Lines       20388    20388              
==========================================
- Hits        10748    10746       -2     
- Misses       8833     8837       +4     
+ Partials      807      805       -2     

Flag	Coverage Δ
unittests	52.70% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
client/daemon/networktopology/network_topology.go	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

[jim3ma]

LGTM

[gaius-qi]

Use SafeSet.

[gaius-qi]

LGTM