The signing app no longer keeps old predefined signing roles because the updated interface now creates signing rules directly on each template when needed. This cleanup reduces obsolete data and updates related examples and automated checks across signing, HR, recruitment, and rental flows without changing the core signing experience.

- Since the big UI refactor in the sign app, the sign item roles are not used anymore and rules are added on the template on the run 
- This commit aims to clean up the data file of these roles and update the tests not to use them


Task: 4646742