Fix concept retrieval by parsing string ID to integer in Person Attribute Translator

[icrc-jofrancisco]

Description of what I changed

Updated concept retrieval to use the correct ConceptService.get(Integer id) method by explicitly parsing the string ID to an integer.
Previously, the code was passing a stringified numeric ID to ConceptService.get(String uuid), which led to null being returned in real scenarios because no UUID matched the numeric string. This change ensures we call the correct method overload for integer-based IDs.

Thanks,
CC: @ibacher @parthfloyd

Checklist: I completed these to help reviewers :)

• My IDE is configured to follow the code style of this project.

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

• I ran mvn clean package right before creating this pull request and
  added all formatting changes to my commit.

• All new and existing tests passed.

• My pull request is based on the latest changes of the master branch.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.46%. Comparing base (c7f2ec2) to head (a5e03d4).
Report is 57 commits behind head on master.

Files with missing lines	Patch %	Lines
...ranslators/impl/PersonAttributeTranslatorImpl.java	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #567      +/-   ##
============================================
+ Coverage     77.84%   78.46%   +0.61%     
+ Complexity     2683     2516     -167     
============================================
  Files           239      239              
  Lines          7452     7353      -99     
  Branches        901     1022     +121     
============================================
- Hits           5801     5769      -32     
+ Misses         1115      990     -125     
- Partials        536      594      +58     

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[gracepotma]

@pmanko since Ian is extremely swamped right now, could you kindly take a look at this PR?

Big-picture context here: ICRC is using Google Health's Android FHIR SDK to build a secure offline app for offline/community-based patient visits. To get it to exchange data with their O3 systems, they've been making improvements to the FHIR2 module, like this one. :) So this is based in field-level needs.

[ibacher]

@icrc-jofrancisco Could we add an integration test to cover this feature please?

[icrc-jofrancisco]

@icrc-jofrancisco Could we add an integration test to cover this feature please?

Hello @ibacher Can you check the latest tests added? Thanks

[gracepotma]

Followed up with Ian today - this is in his review queue, and he'll try to get to it Monday for you! Thank you for your patience and, as always, really appreciate your contributions ❤️ 💐 🙏