Competition validation and cancel fixes

[Rotheem]

Description

Summary

Allows volunteer validation and auto validate free products
Fix participation cancelling

Issues/PR dependencies

Issues to be resolved

Required PRs

Changes Made

• ...
• ...

Additional Notes

Classification

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 🔨 Refactor (non-breaking change that neither fixes a bug nor adds a feature)
• 🔧 Infra CI/CD (changes to configs of workflows)
• 💥 BREAKING CHANGE (fix or feature that require a new minimal version of the front-end)
• 😶‍🌫️ No impact for the end-users

Impact & Scope

• Core functionality changes
• Single module changes
• Multiple modules changes
• Database migrations required
• Other: ...

Testing

• 1. Tested this locally
• 2. Added/modified tests that pass the CI (or tested in a downstream fork)
• 3. Tested in a deployed pre-prod
• 0. Untestable (exceptionally), will be tested in prod directly

Documentation

• Updated the docs accordingly :
• " Docstrings
• # Inline comments
• No documentation needed

[codecov]

Codecov Report

❌ Patch coverage is 44.44444% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.42%. Comparing base (acba6e2) to head (e69cfb7).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/sport_competition/endpoints_sport_competition.py	37.50%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #977      +/-   ##
==========================================
- Coverage   84.44%   84.42%   -0.02%     
==========================================
  Files         205      205              
  Lines       14873    14881       +8     
==========================================
+ Hits        12560    12564       +4     
- Misses       2313     2317       +4     

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