Fix EE::User#has_paid_namespace? plan check

ee/app/models/ee/user.rb

@@ -231,8 +231,9 @@ module EE
 
     def has_paid_namespace?
       ::Namespace
-        .from("(#{namespace_union_for_reporter_developer_maintainer_owned(:plan_id)}) #{::Namespace.table_name}")
-        .where(plan_id: Plan.where(name: Plan::PAID_HOSTED_PLANS).select(:id))
+        .from("(#{namespace_union_for_reporter_developer_maintainer_owned}) #{::Namespace.table_name}")
+        .include_gitlab_subscription
+        .where(gitlab_subscriptions: { hosted_plan_id: Plan.where(name: Plan::PAID_HOSTED_PLANS) })
         .any?
     end
 

ee/spec/models/user_spec.rb

@@ -1029,4 +1029,39 @@ describe User do
       end
     end
   end
+
+  describe '#has_paid_namespace?' do
+    let_it_be(:user) { create(:user) }
+    let_it_be(:gold_group) { create(:group_with_plan, plan: :gold_plan) }
+    let_it_be(:bronze_group) { create(:group_with_plan, plan: :bronze_plan) }
+    let_it_be(:free_group) { create(:group_with_plan, plan: :free_plan) }
+    let_it_be(:group_without_plan) { create(:group) }
+
+    context 'when the user has Reporter or higher on at least one paid group' do
+      it 'returns true' do
+        gold_group.add_reporter(user)
+        bronze_group.add_guest(user)
+
+        expect(user.has_paid_namespace?).to eq(true)
+      end
+    end
+
+    context 'when the user is only a Guest on paid groups' do
+      it 'returns false' do
+        gold_group.add_guest(user)
+        bronze_group.add_guest(user)
+        free_group.add_owner(user)
+
+        expect(user.has_paid_namespace?).to eq(false)
+      end
+    end
+
+    context 'when the user is not a member of any groups with plans' do
+      it 'returns false' do
+        group_without_plan.add_owner(user)
+
+        expect(user.has_paid_namespace?).to eq(false)
+      end
+    end
+  end
 end