FIX: adjust duplicate name error message

[GabrielTozatti]

Description

Adjusts the error message returned when a duplicate name is detected.
Previously, the message was inconsistent and referenced “Predicate” even in Account contexts.

Summary

• Fixed the duplicate name error message to match the correct entity (Account/Predicate).
• Prevents confusion when handling different entities in the same service.

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

What was done

Fixed the duplicate name error message in PredicateService to correctly reference "Account" instead of "Predicate" when validating duplicate names. This addresses inconsistent error messaging that could confuse users when the same service handles different entity types.

Positive Points

• Clear and focused fix addressing a specific UX issue
• Proper error message consistency
• Simple, low-risk change
• Good PR description explaining the context and impact

Issues Found

1 critical issue found related to the generic nature of the error message that doesn't properly handle different entity types dynamically.

Total comments: 1 (1 critical, 0 important)