[backend] Fix on batching execution traces

[Dimfacion]

Proposed changes

Testing Instructions

1. Step-by-step how to test
2. Environment or config notes

Related issues

• Closes #ISSUE-NUMBER

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

Attention: Patch coverage is 56.38298% with 164 lines in your changes missing coverage. Please review.

Project coverage is 44.21%. Comparing base (0fb7f77) to head (236c02d).
Report is 16 commits behind head on release/current.

Files with missing lines	Patch %	Lines
...o/openbas/rest/helper/queue/BatchQueueService.java	46.37%	70 Missing and 4 partials ⚠️
...st/inject/service/BatchingInjectStatusService.java	73.74%	34 Missing and 13 partials ⚠️
...n/java/io/openbas/rest/finding/FindingService.java	0.00%	23 Missing ⚠️
...ain/java/io/openbas/rest/finding/FindingUtils.java	0.00%	10 Missing ⚠️
...as/rest/inject/service/InjectExecutionService.java	0.00%	4 Missing ⚠️
...nbas/rest/inject/form/InjectExecutionCallback.java	0.00%	3 Missing ⚠️
...er/queue/executor/BatchExecutionTraceExecutor.java	0.00%	2 Missing ⚠️
.../openbas/config/ThreadPoolTaskSchedulerConfig.java	66.66%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##             release/current    #3270      +/-   ##
=====================================================
+ Coverage              44.11%   44.21%   +0.09%     
- Complexity              2612     2645      +33     
=====================================================
  Files                    718      726       +8     
  Lines                  21922    22323     +401     
  Branches                1502     1532      +30     
=====================================================
+ Hits                    9670     9869     +199     
- Misses                 11729    11922     +193     
- Partials                 523      532       +9     

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