fix(project): check project status for uniqueness constraint

[tnagorra]

Changes

• remove database level constraint for project name uniqueness
• ignore withdrawn and discarded projects when checking for project name uniqueness

This PR doesn't introduce any:

• temporary files, auto-generated files or secret keys
• n+1 queries
• flake8 issues
• print
• typos
• unwanted comments

This PR contains valid:

• tests

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.43%. Comparing base (79334c3) to head (9b0dfe5).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #226      +/-   ##
===========================================
+ Coverage    87.41%   87.43%   +0.02%     
===========================================
  Files          205      205              
  Lines        12458    12466       +8     
  Branches      1049     1049              
===========================================
+ Hits         10890    10900      +10     
+ Misses        1181     1180       -1     
+ Partials       387      386       -1     

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