[ui] Reinstate Meta and Payload sections to Parameterized Child Jobs (#13473)

* Shift meta off job.definition and decodedPayload alias to passed arg

* Changelog

.changelog/13473.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ui: Fixed a bug where dispatched children of parameterized jobs wouldn't display metadata or payloads
+``

ui/app/components/job-page/parameterized-child.js

@@ -3,7 +3,7 @@ import { alias } from '@ember/object/computed';
 import Component from '@glimmer/component';
 
 export default class ParameterizedChild extends Component {
-  @alias('job.decodedPayload') payload;
+  @alias('args.job.decodedPayload') payload;
 
   @computed('payload')
   get payloadJSON() {

ui/app/templates/components/job-page/parameterized-child.hbs

@@ -24,12 +24,12 @@
     <jobPage.ui.TaskGroups @sortProperty={{@sortProperty}} @sortDescending={{@sortDescending}} />
     <jobPage.ui.RecentAllocations />
     <div class="boxed-section">
-      <div class="boxed-section-head">
-        Meta
-      </div>
-      {{#if @job.definition.Meta}}
+      {{#if @job.meta}}
         <jobPage.ui.Meta />
       {{else}}
+        <div class="boxed-section-head">
+          Meta
+        </div>
         <div class="boxed-section-body">
           <div data-test-empty-meta-message class="empty-message">
             <h3 class="empty-message-headline">