🐛 [BUG] Fix errors in Aggregator when retrieving unpublished Route Steps (refs #3569)

[Chatewgne]

Description

• Filter Steps by portal
• Fix key error on UUID
• Fetch missing categories (not published in regular list)
• Publish some categories in API through detail view

Related Issue

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
• I added an entry in the changelog file
• My commits are all using prefix convention (emoji + tag name) and references associated issues
• I added a label to the PR corresponding to the perimeter of my contribution
• The title of my PR mentionned the issue associated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.40%. Comparing base (3c1f019) to head (8b7e550).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4338      +/-   ##
==========================================
- Coverage   98.41%   98.40%   -0.01%     
==========================================
  Files         267      267              
  Lines       20926    20976      +50     
==========================================
+ Hits        20594    20642      +48     
- Misses        332      334       +2     

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[cypress]

Geotrek-admin    Run #10132

Run Properties:   Passed #10132  •  c7c6623801 ℹ️: Merge 8b7e55090b225cb6aea7cc0a681ad2da7decd04c into 7d721f0aca32692d436f8d3bacd6...

Project	Geotrek-admin
Run status	Passed #10132
Run duration	02m 07s
Commit	c7c6623801 ℹ️: Merge 8b7e55090b225cb6aea7cc0a681ad2da7decd04c into 7d721f0aca32692d436f8d3bacd6...
Committer	Célia
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	22