improved displaying of stashed urls and approval state in admin (#11193)

## Purpose
Admins feel discomfort while looking for tokens in stashed urls and approval state fields on a registration page in admin

## Changes
Format fields in a json-like way

## Ticket
https://openscience.atlassian.net/browse/ENG-6614?atlOrigin=eyJpIjoiMTdkMTM0YzBmNjljNDcxYTkxNjYzZDRjYTY3NjEyODMiLCJwIjoiaiJ9

Author: ihorsokhanexoft

admin/templates/nodes/embargo.html

@@ -51,11 +51,11 @@
                     </tr>
                     <tr>
                         <td>Approval State</td>
-                        <td><p>{{ embargo.approval_state }}</p></td>
+                        <td><pre style="width: 1200px !important;" >{{ embargo.approval_state | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>Stashed Urls</td>
-                        <td><p>{{ embargo.stashed_urls }}</p></td>
+                        <td><pre style="width: 1200px !important;">{{ embargo.stashed_urls | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>For Existing Registration</td>

admin/templates/nodes/embargo_termination_approval.html

@@ -44,11 +44,11 @@
                     </tr>
                     <tr>
                         <td>Approval State</td>
-                        <td><pre style="width: 20%;">{{ embargo_termination_approval.approval_state }}</pre></td>
+                        <td><pre style="width: 1200px !important;">{{ embargo_termination_approval.approval_state | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>Stashed Urls</td>
-                        <td><pre style="width: 20%;">{{ embargo_termination_approval.stashed_urls }}</pre></td>
+                        <td><pre style="width: 1200px !important;">{{ embargo_termination_approval.stashed_urls | pprint }}</pre></td>
                     </tr>
                 </tbody>
             </table>

admin/templates/nodes/registration_approval.html

@@ -40,11 +40,11 @@
                     </tr>
                     <tr>
                         <td>Approval State</td>
-                        <td><pre style="width: 400px !important;" >{{ registration_approval.approval_state }}</pre></td>
+                        <td><pre style="width: 1200px !important;" >{{ registration_approval.approval_state | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>Stashed Urls</td>
-                        <td><pre style="width: 400px !important;">{{ registration_approval.stashed_urls }}</pre></td>
+                        <td><pre style="width: 1200px !important;">{{ registration_approval.stashed_urls | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>notify_initiator_on_complete</td>

admin/templates/nodes/retraction.html

@@ -46,11 +46,11 @@
                     </tr>
                     <tr>
                         <td>Approval State</td>
-                        <td><pre style="white-space:pre-wrap;">{{ retraction.approval_state }}</pre></td>
+                        <td><pre style="width: 1200px !important;" >{{ retraction.approval_state | pprint }}</pre></td>
                     </tr>
                     <tr>
                         <td>Stashed Urls</td>
-                        <td><pre style="white-space:pre-wrap;">{{ retraction.stashed_urls }}</pre></td>
+                        <td><pre style="width: 1200px !important;">{{ retraction.stashed_urls | pprint }}</pre></td>
                     </tr>
                 </tbody>
             </table>