[dont merge] Refactor url building on server

[zhiltsov-max]

Motivation and context

• Fixed possible server 500 error in tus uploads, when there's no proxy and no origin header in the request (e.g. dev environment with direct server calls from CLI/SDK)
• Refactored url building calls on the server

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have created a changelog fragment
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (see GitHub docs)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 75.85%. Comparing base (dbe0aac) to head (b8823dc).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #10227   +/-   ##
========================================
  Coverage    75.84%   75.85%           
========================================
  Files          430      430           
  Lines        46543    46534    -9     
  Branches      4174     4174           
========================================
- Hits         35302    35298    -4     
+ Misses       11241    11236    -5     

Components	Coverage Δ
cvat-ui	77.58% <ø> (ø)
cvat-server	74.38% <0.00%> (+0.01%)	⬆️

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