CategoryCreateProcessor: set timestampable properties manually

In production this does not work in this case now.
Because reproduction and fix may be hard, we use this quickfix here.
This allows us to release and deploy in the meantime.

Issue: ecamp#3662

api/src/Entity/ContentNode/ColumnLayout.php

@@ -138,4 +138,14 @@ public function getSupportedSlotNames(): array {
 
         return $columns->map(fn (array $element) => $element['slot'])->getValues();
     }
+
+    #[ApiProperty(readable: false, writable: false)]
+    public function setCreateTime(\DateTime $createTime): void {
+        $this->createTime = $createTime;
+    }
+
+    #[ApiProperty(readable: false, writable: false)]
+    public function setUpdateTime(\DateTime $updateTime): void {
+        $this->updateTime = $updateTime;
+    }
 }

api/src/State/CategoryCreateProcessor.php

@@ -30,6 +30,14 @@ public function onBefore($data, Operation $operation, array $uriVariables = [],
             ->findOneBy(['name' => 'ColumnLayout'])
         ;
         $rootContentNode->data = ['columns' => [['slot' => '1', 'width' => 12]]];
+        /*
+         * Set the timestampable properties here by hand, because only in production
+         * this does not work.
+         * Remove this again as soon as https://github.com/ecamp/ecamp3/issues/3662 is really fixed.
+         */
+        $rootContentNode->setCreateTime(new \DateTime());
+        $rootContentNode->setUpdateTime(new \DateTime());
+
         $data->setRootContentNode($rootContentNode);
 
         return $data;