[release-1.26] Update the operator description as it's no longer expe…

[FilipB]

…rimental

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.51%. Comparing base (d1c6ee4) to head (ee78df3).
Report is 1 commits behind head on release-1.26.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.26     #837   +/-   ##
=============================================
  Coverage         76.51%   76.51%           
=============================================
  Files                44       44           
  Lines              2636     2636           
=============================================
  Hits               2017     2017           
  Misses              532      532           
  Partials             87       87           

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