### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

copyObject and putObject (and perhaps other requests) requests are accepted and do not return an error when an SSE KMS key is specified. 

### Expected Behavior

The error which should be returned is KMS.NotFoundException.

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    Localstack testcontainers 

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

   Call copyObject/putObject via latest version using AWS SDK V2 and specific a ssekmsKeyId.

```java
final var copyObjectRequestBuilder =
        CopyObjectRequest.builder()
            .serverSideEncryption(ServerSideEncryption.AWS_KMS)
            .ssekmsKeyId("NON-EXISTENT KMS KEY")
            .sourceBucket(sourceBucketName)
            .sourceKey(sourceKey)
            .destinationBucket(destinationBucket)
            .destinationKey(destinationKey);
final var copyObjectResponse = sourceRegionS3Client.copyObject(copyObjectRequest); // Error should be thrown here but localstack does not return an error
```

### Environment

```markdown
- OS: MacOS 13.0
- LocalStack: Latest (v1.2.0)
```


### Anything else?

_No response_
self._notification_dispatcher.shutdown()
    def _notify(
        self,
        context: RequestContext,
        s3_notif_ctx: S3EventNotificationContext = None,
        key_name: ObjectKey = None,
    ):
        
        
        if not s3_notif_ctx:
            s3_notif_ctx = S3EventNotificationContext.from_request_context(
                context, key_name=key_name
            )
        if notification_config := self.get_store().bucket_notification_configs.get(
            s3_notif_ctx.bucket_name
        ):
            self._notification_dispatcher.send_notifications(s3_notif_ctx, notification_config)
    def _verify_notification_configuration(
        self,
        notification_configuration: NotificationConfiguration,
        skip_destination_validation: SkipValidation,
    ):
        self._notification_dispatcher.verify_configuration(
            notification_configuration, skip_destination_validation
        )
    @handler("CreateBucket", expand=False)
    def create_bucket(