Bug 32596: Filter jobs by enqueued on, not started on

To test:
1 - Do a bunch of stuff in the staff interface the will generate background jobs
2 - Wait a bit to make sure all the jobs are done
3 - Visit Admin->Jobs
4 - Note there is nothing shown
5 - uncheck 'Current jobs only' and 'Only include jobs started in the last hour'
6 - Note that nothing is shown, but header says '(filtered from X jobs)'
7 - Apply patch
8 - Reload table
9 - Confirm you can see the finished jobs now

Signed-off-by: Andrew Fuerste-Henry <andrewfh@dubcolib.org>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

koha-tmpl/intranet-tmpl/prog/en/modules/admin/background_jobs.tt

@@ -128,7 +128,7 @@
 
     <div>
         <input type="checkbox" id="include_last_hour" checked />
-        <label for="include_last_hour">Only include jobs started in the last hour</label>
+        <label for="include_last_hour">Only include jobs enqueued in the last hour</label>
     </div>
 
     <div class="page-section">
@@ -251,7 +251,7 @@
             [% END %]
 
             let additional_filters = {
-                started_on: function(){
+                enqueued_on: function(){
                     let now = new Date();
                     if ( $("#include_last_hour").is(":checked") ) {
                         now.setHours(now.getHours() - 1);