[Fleet] Unskip standalone agent tests (#188595)

## Summary

Fix for that test was merged here, but the test was not unskipped
#187777

x-pack/test/fleet_api_integration/apis/integrations/inputs_with_standalone_docker_agent.ts

@@ -25,9 +25,7 @@ export default function (providerContext: FtrProviderContext) {
   const config = getService('config');
   const log = getService('log');
 
-  // Failing: See https://github.com/elastic/kibana/issues/184681
-  // Failing: See https://github.com/elastic/kibana/issues/184681
-  describe.skip('inputs_with_standalone_docker_agent', () => {
+  describe('inputs_with_standalone_docker_agent', () => {
     skipIfNoDockerRegistry(providerContext);
     let apiKey: string;
     let agent: AgentProcess;