[BUGFIX] Add missing field in MigrateFeloginPlugins upgrade wizard

This commit adds the missing field forget_header to the upgrade wizard.
The field is available in 9.5 and in 10.4 as "settings.forgot_header" and
thus needs to be migrated.

Resolves: #92585
Releases: master, 10.4
Change-Id: Icb55a962873042aab946cc227e2374675eb8c98e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66193
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/felogin/Classes/Updates/MigrateFeloginPlugins.php

@@ -54,6 +54,7 @@ final class MigrateFeloginPlugins implements UpgradeWizardInterface
         'status_message',
         'logout_header',
         'logout_message',
+        'forgot_header',
         'forgot_reset_message'
     ];