Fix PHP 8.4 deprecation

Problem/Motivation

Deprecated: Drupal\date_augmenter\DateAugmenter\DateAugmenterInterface::augmentOutput(): Implicitly marking parameter $end as nullable is deprecated, the explicit nullable type must be used instead in /var/www/html/web/modules/contrib/date_augmenter/src/DateAugmenter/DateAugmenterInterface.php on line 55

Steps to reproduce

Seen with PHP 8.4.14 :

Proposed resolution

I will create an issue fork

date_augmenter-php84-nullable.patch

diff -uNr patchsrc/date_augmenter/src/DateAugmenter/DateAugmenterInterface.php web/modules/contrib/date_augmenter/src/DateAugmenter/DateAugmenterInterface.php
--- patchsrc/date_augmenter/src/DateAugmenter/DateAugmenterInterface.php	2025-06-20 08:45:44.000000000 -0400
+++ web/modules/contrib/date_augmenter/src/DateAugmenter/DateAugmenterInterface.php	2026-02-17 16:54:02.882029001 -0500
@@ -52,6 +52,6 @@
    * @return array
    *   Returns a render array for the output of the task;
    */
-  public function augmentOutput(array &$output, DrupalDateTime $start, DrupalDateTime $end = NULL, array $options = []);
+  public function augmentOutput(array &$output, DrupalDateTime $start, ?DrupalDateTime $end = NULL, array $options = []);
 
 }
diff -uNr patchsrc/date_augmenter/src/Plugin/DateAugmenterBase.php web/modules/contrib/date_augmenter/src/Plugin/DateAugmenterBase.php
--- patchsrc/date_augmenter/src/Plugin/DateAugmenterBase.php	2025-06-20 08:45:44.000000000 -0400
+++ web/modules/contrib/date_augmenter/src/Plugin/DateAugmenterBase.php	2026-02-17 16:55:13.402812006 -0500
@@ -83,6 +83,6 @@
    * @param array $options
    *   An array of options to further guide output.
    */
-  abstract public function augmentOutput(array &$output, DrupalDateTime $start, DrupalDateTime $end = NULL, array $options = []);
+  abstract public function augmentOutput(array &$output, DrupalDateTime $start, ?DrupalDateTime $end = NULL, array $options = []);
 
 }
diff -uNr patchsrc/date_augmenter/src/Plugin/DateAugmenterInterface.php web/modules/contrib/date_augmenter/src/Plugin/DateAugmenterInterface.php
--- patchsrc/date_augmenter/src/Plugin/DateAugmenterInterface.php	2025-06-20 08:45:44.000000000 -0400
+++ web/modules/contrib/date_augmenter/src/Plugin/DateAugmenterInterface.php	2026-02-17 16:54:31.296250001 -0500
@@ -25,6 +25,6 @@
    * @return array
    *   Returns a render array for the output of the task;
    */
-  public function augmentOutput(array &$output, DrupalDateTime $start, DrupalDateTime $end = NULL, array $options = []);
+  public function augmentOutput(array &$output, DrupalDateTime $start, ?DrupalDateTime $end = NULL, array $options = []);
 
 }

Remaining tasks

User interface changes

API changes

Data model changes