🚀 - `InputCardGroup` should hide empty labels

### Description

```ts
providers: [
    {
        provide: TUI_INPUT_CARD_GROUP_TEXTS,
        useValue: of({
            cardNumberText: '',
            expiryText: '',
            cvcText: '',
        }),
    },
],
```

<img width="1060" height="476" alt="Image" src="https://github.com/user-attachments/assets/e06eb8ff-a81e-4138-8fff-6434106441e7" />