fix: FIT-258: Data Manager tabs created by other users change position after tab order change by the Owner

[yyassi-heartex]

This pull request updates the create method in label_studio/data_manager/serializers.py to improve the handling of the order field when creating a new view. Instead of defaulting to 0, the order field is now dynamically set based on the current count of views within the specified project.

after fix:

Enhancements to order field handling:

• label_studio/data_manager/serializers.py: Updated the create method to calculate and set the order field using the current count of views in the project, ensuring proper indexing for new views.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.47%. Comparing base (63e6938) to head (cfaf135).
Report is 6 commits behind head on develop.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7819      +/-   ##
===========================================
- Coverage    78.48%   78.47%   -0.02%     
===========================================
  Files          206      206              
  Lines        16504    16505       +1     
===========================================
- Hits         12953    12952       -1     
- Misses        3551     3553       +2     

Flag	Coverage Δ
pytests	78.47% <100.00%> (-0.02%)	⬇️

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[yyassi-heartex]

/git merge

Workflow run
Successfully merged: create mode 100644 web/libs/ui/src/assets/icons/globe.svg

[yyassi-heartex]

/git merge

Workflow run
Successfully merged: 2 files changed, 5 insertions(+), 6 deletions(-)