test/unit/local/atom/producer: Use mocha.context()
test/unit/local/atom/producer: Use mocha.context()

Prefer:

- `mocha.describe()` for module/class/method descriptions
- `mocha.context()` for subcases

cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop