ui: fix jobs page error state

Previously, the error state for the jobs page was
only displayed if there were previously jobs
returned. We should show the api error even when
we have never received a successful jobs payload
(e.g. error on first request). This commit changes
error displaying in the jobs page  such that we will
show the request error  regardless of whether or not
we have previously received data. If we have previous
data when we receive an unsuccessful request response,
we will show the error along with the existing data.

Epic: none

Release note (bug fix): Jobs page properly shows error state
when we receive an error during data fetching.

pkg/ui/workspaces/cluster-ui/src/jobs/jobsPage/jobsPage.tsx

@@ -243,7 +243,6 @@ export class JobsPage extends React.Component<JobsPageProps, PageState> {
       onColumnsChange,
     } = this.props;
     const isLoading = reqInFlight && (!isDataValid || !jobs);
-    const error = jobs && jobsError;
     const { pagination } = this.state;
     const filteredJobs = jobs?.jobs ?? [];
     const columns = makeJobsColumns();
@@ -300,7 +299,14 @@ export class JobsPage extends React.Component<JobsPageProps, PageState> {
           </PageConfig>
         </div>
         <div className={cx("table-area")}>
-          <Loading loading={isLoading} page={"jobs"} error={error}>
+          {jobsError && jobs && (
+            <InlineAlert intent="danger" title={jobsError.message} />
+          )}
+          <Loading
+            loading={isLoading}
+            page={"jobs"}
+            error={!jobs ? jobsError : null}
+          >
             <div>
               <section className={sortableTableCx("cl-table-container")}>
                 <div className={sortableTableCx("cl-table-statistic")}>
@@ -350,7 +356,7 @@ export class JobsPage extends React.Component<JobsPageProps, PageState> {
               />
             </div>
           </Loading>
-          {isLoading && !error && (
+          {isLoading && !jobsError && (
             <Delayed delay={moment.duration(2, "s")}>
               <InlineAlert
                 intent="info"