Incorrect raw type warning on sealed classes

On code of the form:
```java
sealed interface I<T> permits C {...}
class C<T> implements I<T> {...}
```
VS Code issues a warning until one writes:
```java
sealed interface I<T> permits C<T> {...}
```
However, this is not valid Java syntax.

##### Environment
- Operating System: MacOS 12.1
- JDK version: 17
- Visual Studio Code version: 1.63.2
- Java extension version: 1.2.0
