Add missing tag to inject configured event dispatcher

[amenophis]

Target branch: 4.8.x Resolves issue #

• [X] It is a Bug fix
• [ ] It is a New feature
• [ ] Breaks BC
• [ ] Includes Deprecations

Add missing tags in dynamic attestation and assertion validator services.

IMHO, those multiple services should be removed to have only one declared by class, instead of one by configuration.