fix: Fix redirection to Pocket

Requesting access to Pocket account implies a redirection to an external
domain (i.e. getpocket.com). The form was handled by Turbo Drive, which
cannot access this domain because of the `Content-Security-Policy` and
`Access-Control-Allow-Origin` policies. Thus, Turbo Drive needs to be
disabled on this form.

The bug has been introduced by d65c702.

Reference: hotwired/turbo#401

src/views/importations/pocket/show.phtml

@@ -176,7 +176,7 @@
             </small>
         </p>
     <?php else: ?>
-        <form method="post" action="<?= url('request pocket access') ?>">
+        <form method="post" action="<?= url('request pocket access') ?>" data-turbo="false">
             <input type="hidden" name="csrf" value="<?= $csrf_token ?>" />
 
             <div class="form__actions">