[Validator] Fixed wrong translations for Collection constraints

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11630
| License       | MIT
| Doc PR        | 

The error messages for a missing field and an unexpected field did not match the Constraint class.