[ResponseOps][Connectors] Jira Service Management Connector phase 2 (#235408)

## 📄 Summary

> [!IMPORTANT]
> This PR completes the intermediate release process for the new JSM
connector.

- Enables the JSM connector UI
- Unskips/adds back UI-related tests

## 🧪 Verification steps

The JSM connector UI was verified in the [phase 1
PR](#231155).

<details>
<summary>

## 🔗 References

Closes #231571

## Release Notes

Adds a new Connector for Jira Service Management

### Checklist

- [x] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)
- [ ]
~~[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials~~
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] ~~If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)~~
- [ ] ~~This was checked for breaking HTTP API changes, and any breaking
changes have been approved by the breaking-change committee. The
`release_note:breaking` label should be applied in these situations.~~
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [x] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)
- [ ] Review the [backport
guidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)
and apply applicable `backport:*` labels.

Author: umbopepato

x-pack/platform/plugins/shared/stack_connectors/public/connector_types/jira-service-management/model.test.tsx

@@ -27,16 +27,13 @@ beforeAll(() => {
   }
 });
 
-// Temporarily skipped until we enable the frontend part of the JSM connector
-// https://github.com/elastic/kibana/issues/231571
-
-describe.skip('connectorTypeRegistry.get() works', () => {
+describe('connectorTypeRegistry.get() works', () => {
   it('sets the id field in the connector type static data to the correct value', () => {
     expect(connectorTypeModel.id).toEqual(JIRA_SERVICE_MANAGEMENT_CONNECTOR_TYPE_ID);
   });
 });
 
-describe.skip('jira service management action params validation', () => {
+describe('jira service management action params validation', () => {
   it('results in no errors when the action params are valid for creating an alert', async () => {
     const actionParams = {
       subAction: JiraServiceManagementSubActions.CreateAlert,

x-pack/platform/plugins/shared/stack_connectors/public/connector_types/jira-service-management/model.tsx

@@ -44,8 +44,6 @@ export const getConnectorType = (): ConnectorTypeModel<
 > => {
   return {
     id: '.jira-service-management',
-    // Hidden while in intermediate release
-    hideInUi: true,
     iconClass: lazy(() => import('./jsm_logo')),
     selectMessage: SELECT_MESSAGE,
     actionTypeTitle: TITLE,

x-pack/platform/test/functional_with_es_ssl/apps/triggers_actions_ui/connectors/index.ts

@@ -11,6 +11,7 @@ export default ({ loadTestFile }: FtrProviderContext) => {
   describe('Connectors', function () {
     loadTestFile(require.resolve('./general'));
     loadTestFile(require.resolve('./opsgenie'));
+    loadTestFile(require.resolve('./jsm'));
     loadTestFile(require.resolve('./tines'));
     loadTestFile(require.resolve('./slack'));
     loadTestFile(require.resolve('./webhook'));