New repository_has_successfully_synced? method

ee/app/models/geo/project_registry.rb

@@ -432,6 +432,10 @@ class Geo::ProjectRegistry < Geo::BaseRegistry
     :synced
   end
 
+  def repository_has_successfully_synced?
+    last_repository_successful_sync_at.present?
+  end
+
   private
 
   # Whether any operation has ever been attempted

ee/spec/models/geo/project_registry_spec.rb

@@ -1014,4 +1014,22 @@ describe Geo::ProjectRegistry do
       expect(registry.synchronization_state).to eq(:synced)
     end
   end
+
+  describe 'repository_has_successfully_synced?' do
+    context 'when repository has never successfully synced' do
+      it 'returns false' do
+        registry = create(:geo_project_registry, last_repository_successful_sync_at: nil)
+
+        expect(registry.repository_has_successfully_synced?).to be_falsey
+      end
+    end
+
+    context 'when repository has successfully synced' do
+      it 'returns true' do
+        registry = create(:geo_project_registry, last_repository_successful_sync_at: Time.now)
+
+        expect(registry.repository_has_successfully_synced?).to be_truthy
+      end
+    end
+  end
 end