Fix propagating annotations to Gateway route

[pavolloffay]

https://issues.redhat.com/browse/TRACING-4511

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.16%. Comparing base (ea163fd) to head (5bc8013).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1014   +/-   ##
=======================================
  Coverage   73.16%   73.16%           
=======================================
  Files         106      106           
  Lines        6607     6608    +1     
=======================================
+ Hits         4834     4835    +1     
  Misses       1480     1480           
  Partials      293      293           

Flag	Coverage Δ
unittests	73.16% <100.00%> (+<0.01%)	⬆️

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