fix(predicate): adds exclusive method to get user notification data

[pedroanastacio]

Description

The endpoint GET - /predicate/:predicateId was returning more information than it should have, in this case the user's email address. To obtain notification information about a user, an internal method must be created in the API so as not to expose critical information.}

Summary

• Adds getNotificationInfo method to obtain user notification information.
• Moves email sending logic to Notifications service.
• Removes email and notify from the return of the endpoint GET - /predicate/:predicateId.

Checklist

• I reviewed my PR code before submitting
• I ensured that the implementation is working correctly and did not impact other parts of the app
• I mentioned the PR link in the task

[guimroque]

Code Review

Summary

This PR successfully addresses a security vulnerability by preventing exposure of user email addresses in the predicate endpoint. The refactoring moves notification logic to a dedicated service and introduces a new method to safely retrieve user notification data.

Strengths

• Excellent security fix removing email exposure from public endpoint
• Clean separation of concerns moving notification logic to NotificationService
• Proper error handling with structured logging
• Good use of parallel processing for notifications and emails

Issues

• 1 critical, 1 important, 1 suggestion