[backend/frontend] Fix duplicate payload

[RomuDeuxfois]

Related issues

• Issue with Duplication of Payload #1233

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 28.62%. Comparing base (adcccc7) to head (cac892e).

Files	Patch %	Lines
...java/io/openbas/rest/exercise/ExerciseService.java	0.00%	1 Missing ⚠️
.../main/java/io/openbas/rest/payload/PayloadApi.java	0.00%	1 Missing ⚠️
.../java/io/openbas/service/AtomicTestingService.java	0.00%	1 Missing ⚠️
.../main/java/io/openbas/service/ScenarioService.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1241      +/-   ##
============================================
- Coverage     28.75%   28.62%   -0.14%     
+ Complexity     1284     1279       -5     
============================================
  Files           507      507              
  Lines         13024    12962      -62     
  Branches        745      741       -4     
============================================
- Hits           3745     3710      -35     
+ Misses         9121     9094      -27     
  Partials        158      158              

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