### 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_
snapshot.add_transformers_list(self._get_static_hosting_transformers(snapshot))
        bucket_name = f"bucket-{short_uid()}"
        s3_create_bucket(Bucket=bucket_name, ACL="public-read")
        random_url = _website_bucket_url(f"non-existent-bucket-{short_uid()}")
        response = .get(random_url, verify=False)
        assert response.status_code == 404
        snapshot.match("no-such-bucket", response.text)
        website_url = _website_bucket_url(bucket_name)
        # actu
        response = .get(website_url, verify=False)
        assert response.status_code == 404
        snapshot.match("no-such-website-config", response.text)
        url = f"{website_url}/actual/key.html"
        response = .get(url)
        assert response.status_code == 404
        snapshot.match("no-such-website-config-key", response.text)
    @pytest.mark.aws_validated
    @pytest.mark.skipif(
        condition=LEGACY_S3_PROVIDER and not is_aws_cloud(),
        reason="Legacy S3 provider does not provide proper website support",
    )
    def test_website_hosting_http_methods(self, s3_client, s3_create_bucket, snapshot):