Do not apply SLA labels for projects without license

ee/app/workers/incident_management/apply_incident_sla_exceeded_label_worker.rb

@@ -9,7 +9,7 @@ module IncidentManagement
 
     def perform(incident_id)
       @incident = Issue.find_by_id(incident_id)
-      return unless incident&.supports_severity?
+      return unless incident&.sla_available?
 
       @project = incident&.project
       return unless project

ee/spec/workers/incident_management/apply_incident_sla_exceeded_label_worker_spec.rb

@@ -16,6 +16,10 @@ RSpec.describe IncidentManagement::ApplyIncidentSlaExceededLabelWorker do
 
   subject(:perform) { worker.perform(incident.id) }
 
+  before do
+    stub_licensed_features(incident_sla: true)
+  end
+
   context 'label exists already' do
     before do
       incident.labels << label
@@ -50,4 +54,15 @@ RSpec.describe IncidentManagement::ApplyIncidentSlaExceededLabelWorker do
       expect(incident.labels.reload).to be_empty
     end
   end
+
+  context 'without license' do
+    before do
+      stub_licensed_features(incident_sla: false)
+    end
+
+    it 'does not add a label', :aggregate_failures do
+      expect { subject }.not_to change { incident.labels.reload.count }
+      expect(incident.labels.reload).to be_empty
+    end
+  end
 end