fix: fixing error reporting for templates without CEL, cherry-pick (#3493)

[JaydipGabani]

Signed-off-by: Jaydip Gabani gabanijaydip@gmail.com
(cherry picked from commit 4eb7dcd)

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 14.28571% with 6 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-3.17@3f9ba17). Learn more about missing BASE report.

Files	Patch %	Lines
pkg/controller/constraint/constraint_controller.go	0.00%	6 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##             release-3.17    #3495   +/-   ##
===============================================
  Coverage                ?   48.02%           
===============================================
  Files                   ?      219           
  Lines                   ?    15169           
  Branches                ?        0           
===============================================
  Hits                    ?     7285           
  Misses                  ?     7069           
  Partials                ?      815           

Flag	Coverage Δ
unittests	48.02% <14.28%> (?)

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[ritazh]

LGTM