feat: integrate ReplaceKey functionality in Registration and Update pages

- Added `ReplaceKey` class inclusion and instantiation in `Registration.page` and `Update.page`.
- Implemented a call to the `check()` method of `ReplaceKey` to enhance server registration and update processes.

plugin/source/dynamix.unraid.net/usr/local/emhttp/plugins/dynamix.my.servers/Registration.page

@@ -14,6 +14,9 @@ Tag="pencil"
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  */
+require_once "$docroot/plugins/dynamix/include/ReplaceKey.php";
+$replaceKey = new ReplaceKey();
+$replaceKey->check();
 ?>
 <unraid-i18n-host>
   <unraid-registration></unraid-registration>

plugin/source/dynamix.unraid.net/usr/local/emhttp/plugins/dynamix.plugin.manager/Update.page

@@ -14,7 +14,10 @@ Tag="upload"
  * all copies or substantial portions of the Software.
  */
 require_once "$docroot/plugins/dynamix.my.servers/include/reboot-details.php";
+require_once "$docroot/plugins/dynamix/include/ReplaceKey.php";
 $rebootDetails = new RebootDetails();
+$replaceKey = new ReplaceKey();
+$replaceKey->check();
 ?>
 <script>
 function cleanUpFlashBackup(zip) {