* Revert "FIX: Set `override_level` on Logster loggers (#27519)"
This reverts commit c1b0488c547bca935de51cfbb86bbc528e9ab2e5.
* Revert "DEV: Make parameters optional to all FakeLogger methods"
This reverts commit 3318dad7b4e3365854319bb55301cf667a2c28d0.
* Revert "FIX: Remove references to `Rails.logger.chained`"
This reverts commit f595d599dd361b7fb39fb3c82cbc11d19d518c19.
* Revert "DEV: Upgrade Rails to 7.1"
This reverts commit 081b00391e47a7f9bc44b9fe8ce88ac97d728352.
Our SafeMigrate system is designed to prevent tables/columns being dropped in pre-deploy migrations. Its regex-based detection was triggering incorrectly on `ALTER COLUMN DROP NOT NULL`.
It's very easy to forget to add `require 'rails_helper'` at the top of every core/plugin spec file, and omissions can cause some very confusing/sporadic errors.
By setting this flag in `.rspec`, we can remove the need for `require 'rails_helper'` entirely.