Fix(Migration): prevent container name corruption on partial update

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Fix item creation with null value for mandatory fields
 - Fix search crash when two containers share a dropdown field with the same name.
 - Fix handle native GLPI dropdown types when binding additional fields to form destination
+- Fix container name/label corruption during GenericObject migration, which could break the migration with a MySQL identifier-length error.
 
 ## [1.24.2] - 2026-06-30
 

inc/container.class.php

@@ -241,6 +241,7 @@ public static function installBaseData(Migration $migration, $version)
                     $update_data = [
                         'id'        => $container['id'],
                         'itemtypes' => $itemtypes,
+                        'label'     => $container['label'],
                     ];
                     if ($container_name !== $container['name']) {
                         $update_data['name'] = $container_name;
@@ -648,7 +649,12 @@ public function defineTabs($options = [])
 
     public function prepareInputForUpdate($input)
     {
-        return PluginFieldsToolbox::prepareLabel($input);
+        // sanitize label only; name is intentionally left untouched here (see migration callers)
+        if (isset($input['label']) && !empty($input['label'])) {
+            $input['label'] = PluginFieldsToolbox::sanitizeLabel((string) $input['label']);
+        }
+
+        return $input;
     }
 
     public function prepareInputForAdd($input)