Loosen prop requirement

ee/app/assets/javascripts/security_dashboard/components/first_class_project_security_dashboard.vue

@@ -47,7 +47,8 @@ export default {
     },
     vulnerabilitiesExportEndpoint: {
       type: String,
-      required: true,
+      required: false,
+      default: '',
     },
   },
   data() {

ee/app/assets/javascripts/security_dashboard/components/project_security_dashboard.vue

@@ -51,7 +51,8 @@ export default {
     },
     project: {
       type: Object,
-      required: true,
+      required: false,
+      default: undefined,
       validator: project => !isUndefined(project.id) && !isUndefined(project.name),
     },
     dashboardDocumentation: {