Fix visp_rbt module build when visp namespace is enabled

[fspindle]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.56%. Comparing base (89b1dd1) to head (e3a032e).
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1571      +/-   ##
==========================================
+ Coverage   54.54%   54.56%   +0.01%     
==========================================
  Files         442      442              
  Lines       53469    53469              
==========================================
+ Hits        29167    29177      +10     
+ Misses      24302    24292      -10     

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