feat: reclaim mobile_v2 flag for report_rollup (#13666)

db/migrate/20260226153427_disable_report_rollup_for_all_accounts.rb

@@ -0,0 +1,8 @@
+class DisableReportRollupForAllAccounts < ActiveRecord::Migration[7.1]
+  def up
+    Account.feature_report_rollup.find_each(batch_size: 100) do |account|
+      account.disable_features(:report_rollup)
+      account.save!(validate: false)
+    end
+  end
+end