[ML] Adding missing index pattern name to new job wizards (#72400) (#72422)

Author: jgowdyelastic

x-pack/plugins/ml/public/application/jobs/new_job/pages/new_job/page.tsx

@@ -210,6 +210,12 @@ export const Page: FC<PageProps> = ({ existingJobsAndGroups, jobType }) => {
                     : {jobCreatorTitle}
                   </h1>
                 </EuiTitle>
+
+                <FormattedMessage
+                  id="xpack.ml.newJob.page.createJob.indexPatternTitle"
+                  defaultMessage="Using index pattern {index}"
+                  values={{ index: jobCreator.indexPatternTitle }}
+                />
               </EuiPageContentHeaderSection>
             </EuiPageContentHeader>