[ML] Listing global calendars on the job management page (#63124)

* [ML] Listing global calendars on the job management page

* tiny refactor

Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>

Author: jgowdyelastic

x-pack/plugins/ml/server/models/job_service/jobs.ts

@@ -16,6 +16,7 @@ import {
   DatafeedWithStats,
   CombinedJobWithStats,
 } from '../../../common/types/anomaly_detection_jobs';
+import { GLOBAL_CALENDAR } from '../../../common/constants/calendars';
 import { datafeedsProvider, MlDatafeedsResponse, MlDatafeedsStatsResponse } from './datafeeds';
 import { jobAuditMessagesProvider } from '../job_audit_messages';
 import { resultsServiceProvider } from '../results_service';
@@ -227,6 +228,8 @@ export function jobsProvider(callAsCurrentUser: APICaller) {
     const groups: { [jobId: string]: string[] } = {};
     const datafeeds: { [id: string]: DatafeedWithStats } = {};
     const calendarsByJobId: { [jobId: string]: string[] } = {};
+    const globalCalendars: string[] = [];
+
     const requests: [
       Promise<MlJobsResponse>,
       Promise<MlJobsStatsResponse>,
@@ -298,7 +301,9 @@ export function jobsProvider(callAsCurrentUser: APICaller) {
     if (calendarResults) {
       calendarResults.forEach(cal => {
         cal.job_ids.forEach(id => {
-          if (groups[id]) {
+          if (id === GLOBAL_CALENDAR) {
+            globalCalendars.push(cal.calendar_id);
+          } else if (groups[id]) {
             groups[id].forEach(jId => {
               if (calendarsByJobId[jId] !== undefined) {
                 calendarsByJobId[jId].push(cal.calendar_id);
@@ -325,8 +330,12 @@ export function jobsProvider(callAsCurrentUser: APICaller) {
       jobResults.jobs.forEach(job => {
         const tempJob = job as CombinedJobWithStats;
 
-        if (calendarsByJobId[tempJob.job_id].length) {
-          tempJob.calendars = calendarsByJobId[tempJob.job_id];
+        const calendars: string[] = [
+          ...(calendarsByJobId[tempJob.job_id] || []),
+          ...(globalCalendars || []),
+        ];
+        if (calendars.length) {
+          tempJob.calendars = calendars;
         }
 
         if (jobStatsResults && jobStatsResults.jobs) {