Change AccountRelationshipSeveranceEvent model to store lost followers and following counts separately (#29714)

db/post_migrate/20240322130318_remove_relationships_count_from_account_relationship_severance_events.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class RemoveRelationshipsCountFromAccountRelationshipSeveranceEvents < ActiveRecord::Migration[7.1]
+  def change
+    safety_assured { remove_column :account_relationship_severance_events, :relationships_count, :integer, default: 0, null: false }
+  end
+end