validate purchases on full cdr payment

[Luhmos]

Description

Currently, all purchases have to be validated in person. However, if paid on site, the same person collecting the payment has to then manually validate purchases, despite having checked them already before asking for the payment. Thus, we want, for ease of use, to validate all purchases automatically if the full payment has been made on site.

Summary

Added a check when an admin adds a payment to see if the full amount has been paid. If so, validate all purchases.

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