erp5_core: Block Folder_delete for too large selections (>1000 documents)

as an extra safety measure

bt5/erp5_l10n_fr/MessageTranslationTemplateItem/fr/erp5_ui/translation.po

@@ -13897,6 +13897,9 @@ msgstr "Effectuez une recherche pour afficher le contenu."
 msgid "To reset your password, please enter your login below. An email will be sent to your address with a link to enter your new password."
 msgstr "Afin de changer votre mot de passe, entrez votre nom d'utilisateur ci-dessous. Un email contenant des explications sur la marche à suivre sera envoyé à votre adresse."
 
+msgid "Too many documents selected."
+msgstr "Trop de documents sélectionnés."
+
 msgid "Too many documents were found."
 msgstr "Trop de possibilités trouvées."
 

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Folder_delete.py

@@ -35,6 +35,13 @@ if not listbox_uid:
 
 # already filters out documents with relations that cannot be deleted
 object_list = context.Folder_getDeleteObjectList(uid=listbox_uid)
+if len(object_list) > 1000:
+  return context.Base_redirect(
+    keep_items={
+    'portal_status_message': translate("Too many documents selected."),
+    'portal_status_level': "warning",
+    }
+  )
 object_not_deletable_len = len(listbox_uid) - len(object_list)
 
 # some documents cannot be deleted thus we stop and warn the user