configurable notification timeout (#7942)

Ref #7931
Ref #5466
Ref #6409

added configuration in "Display"
<img width="636" height="167" alt="grafik" src="https://github.com/user-attachments/assets/7bbc9f26-d91b-4dd2-b715-1d3f9b7a9ad3" />

* i18n: fr

* Update app/i18n/pl/conf.php

Co-authored-by: Inverle <inverle@proton.me>

* make fix-all

* max()

* Minor whitespace
(I am not a fan of excessive vertical indenting)

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>
Co-authored-by: Inverle <inverle@proton.me>

app/Models/UserConfiguration.php

@@ -28,6 +28,8 @@ declare(strict_types=1);
  * @property string $feverKey
  * @property bool $hide_read_feeds
  * @property int $html5_notif_timeout
+ * @property int $good_notification_timeout
+ * @property int $bad_notification_timeout
  * @property-read bool $is_admin
  * @property int|null $keep_history_default
  * @property string $language