[BUG] Use enums + Enum on discriminator key cause deserialization error
### Describe the bug

```ts
@DiscriminatorValue(EventType.EVENT)
class MyChild extends Base {
  @Enum(EventType)
override eventType: EventType = EventType.EVENT
}
```

rel: See https://github.com/pxr-tech/tsed-sample/pull/4/files

### To Reproduce

TBD

### Expected behavior

TDB

### Code snippets

_No response_

### Repository URL example

_No response_

### OS

macOs

### Node version

Node v20

### Library version

v7 - v8

### Additional context

_No response_