In ##58680 we implemented a new DangerConfirmationDialogComponent which shall be used to get rid of our old danger zones

**Acceptance criteria**

* Replace the following currently existing Rails danger zones with the new component in these pages:

* [x] work\_packages: bulk/destroy
* [x] users: deletion
* Begin of the insertion[x]End of the insertion Begin of the deletion [ ]End of the deletion repositories: destroy
* [x] ~~projects: change identifier~~
* [x] placeholder\_users: deletion
* [x] projects: destroy
* [x] storages: destroy
* [x] openid\_connect: destroy
* [x] ldap\_groups/synchronized\_filters: destroy
* [x] ldap\_groups/synchronized\_groups: destroy
* [x] saml/providers: destroy
* [ ] admin/backups: reset\_token
* Remove the old danger zone implementation from code