DEV: Revert rails 7.1 upgrade (#27522)

* 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.

spec/models/admin_dashboard_data_spec.rb

@@ -42,7 +42,7 @@ RSpec.describe AdminDashboardData do
   end
 
   describe "#problem_message_check" do
-    let(:key) { "new_key" }
+    let(:key) { AdminDashboardData.problem_messages.first }
 
     after { described_class.clear_problem_message(key) }