No BSO e-mail if current user is Owner

ee/app/services/ee/members/create_service.rb

@@ -70,6 +70,9 @@ def check_seats!
 
       def notify_owners(invites)
         root_namespace = source.root_ancestor
+
+        return if root_namespace.owners.include?(current_user)
+
         invited_user_ids = invites.select { |i| i.to_i.to_s == i }
 
         return if invited_user_ids.empty?

ee/spec/services/ee/members/create_service_spec.rb

@@ -301,11 +301,9 @@
   end
 
   context 'with block seat overages enabled', :saas do
-    let_it_be(:owner) { create(:user) }
     let_it_be(:user) { create(:user) }
-    let_it_be(:group) do
-      create(:group_with_plan, plan: :premium_plan).tap { |g| g.add_owner(owner) }
-    end
+    let_it_be(:owner) { create(:user) }
+    let_it_be(:group) { create(:group_with_plan, plan: :premium_plan) }
 
     let_it_be(:project) { create(:project, group: group) }
 
@@ -315,7 +313,7 @@
 
     before do
       stub_saas_features(gitlab_com_subscriptions: true)
-      stub_feature_flags(block_seat_overages: true)
+      group.add_owner(owner)
       group.gitlab_subscription.update!(seats: 1)
     end
 
@@ -326,6 +324,20 @@
       execute_service
     end
 
+    context 'when current user is the owner' do
+      let_it_be(:owner) { user }
+      let_it_be(:group) { create(:group_with_plan, plan: :premium_plan) }
+      let_it_be(:project) { create(:project, group: group) }
+
+      let(:invites) { create(:user).id.to_s }
+
+      it 'does not notify the admin about the requested membership' do
+        expect(::Notify).not_to receive(:no_more_seats)
+
+        execute_service
+      end
+    end
+
     context 'with invited emails' do
       let(:invites) { ['email@example.com'] }