Ensure role exists before access evaluation.

Proposed starting point.

tests/src/Functional/MasqueradeWebTestBase.php

@@ -150,7 +150,6 @@ abstract class MasqueradeWebTestBase extends BrowserTestBase {
     ]);
     $this->editorRole
       ->grantPermission('masquerade as masquerade')
-      ->grantPermission('masquerade as authenticated')
       ->save();
 
     // Create a 'lead' role to masquerade as editors.
@@ -160,7 +159,6 @@ abstract class MasqueradeWebTestBase extends BrowserTestBase {
     ]);
     $this->leadRole
       ->grantPermission('masquerade as editor')
-      ->grantPermission('masquerade as authenticated')
       ->save();
 
     // Create an additional 'moderator' role to check 'masquerade as any user'.