### 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_
buckets = []
    def factory(**kwargs) -> str:
        if "Bucket" not in kwargs:
            kwargs["Bucket"] = "test-bucket-%s" % short_uid()
        s3_client.create_bucket(**kwargs)
        buckets.append(kwargs["Bucket"])
        return kwargs["Bucket"]
    yield factory
    
    for bucket in buckets:
        try:
            bucket = s3_resource.Bucket(bucket)
            bucket.objects.all().delete()
            bucket.object_versions.all().delete()
            bucket.delete()
        except Exception as e:
            LOG.debug("error cleaning up bucket %s: %s", bucket, e)
@pytest.fixture
def s3_bucket(s3_client, s3_create_bucket) -> str: