Provide consistency in info / warning / error class usages in templates

Following XWIKI-21452 we noticed usage of class related to info / warning / error in the templates, without proper usage of the dedicated macros. The outcome is that the class are not always consistent: sometimes box is used, sometimes not.
See also https://github.com/xwiki/xwiki-platform/pull/3023#issuecomment-2296030982

All cases of usage of a CSS class without the macro should be reviewed and a comment should be added if we want or need to keep it like that.