🐛 [BUG] Fix missing languages for 'published' field on Touristic Content in APIv2 (#4439)

[Chatewgne]

Description

Related Issue

#4439

Checklist

• I have followed the guidelines in our Contributing document
• My code respects the Definition of done available in the Development section of the documentation
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes
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[cypress]

Geotrek-admin    Run #10788

Run Properties:   Passed #10788  •  bd09b5179f ℹ️: Merge 06d65b06321ae95b6854eda95c6b447f96b5d8ee into 06f4cd490331b722f248a0ec8931...

Project	Geotrek-admin
Branch Review	refs/pull/4440/merge
Run status	Passed #10788
Run duration	02m 02s
Commit	bd09b5179f ℹ️: Merge 06d65b06321ae95b6854eda95c6b447f96b5d8ee into 06f4cd490331b722f248a0ec8931...
Committer	Célia
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	22
View all changes introduced in this branch ↗︎

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.46%. Comparing base (06f4cd4) to head (06d65b0).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4440   +/-   ##
=======================================
  Coverage   98.46%   98.46%           
=======================================
  Files         268      268           
  Lines       21362    21365    +3     
=======================================
+ Hits        21035    21038    +3     
  Misses        327      327           

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