Finding robot account via exact match (name) either via API or UI does not work

[Kajot-dev]

Expected behavior and actual behavior:

Let's assume that we have a test project and puller account within that project. Full name (without prefix) is test+puller.

Searching with query name=test+puller does not yield any results. However fuzzy match for both "test" and "puller" works, but not for + sign which is the problem.

Steps to reproduce the problem:

1. Create project level robot account
2. Try to search for it via robotv1 API with exact match query by name

Versions:

• harbor version: 2.11.0
• docker engine version: irrelevant
• docker-compose version: irrelevant

Additional context:

Relates to: #18940