### 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, s3_client, s3_bucket, s3_multipart_upload, monkeypatch, snapshot
    ):
        snapshot.add_transformer(
            [
                snapshot.transform.key_value("Location"),
                snapshot.transform.key_value("Bucket"),
            ]
        )
        monkeypatch.setattr(config, "HOSTNAME_EXTERNAL", "foobar")
        key = "test.file"
        content = "test content 123"
        acl = "public-read"
        # uplo
        response = s3_multipart_upload(bucket=s3_bucket, key=key, data=content, acl=acl)
        snapshot.match("multipart-upload", response)
        if is_aws_cloud():  # TODO
            expected_url = f"{_bucket_url_vhost(bucket_name=s3_bucket)}/{key}"
        else:  # LS d
            expected_url = f"{_bucket_url(bucket_name=s3_bucket, localstack_host=config.HOSTNAME_EXTERNAL)}/{key}"
        assert response["Location"] == expected_url
        # down
        downloaded_ = s3_client.get_(Bucket=s3_bucket, Key=key)
        snapshot.match("get-", response)
        assert content == to_str(downloaded_["Body"].read())
        # down
        download_url = response["Location"].replace(f"{config.HOSTNAME_EXTERNAL}:", "localhost:")
        response = .get(download_url)