### 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,
        context: RequestContext,
        request: GetObjectAttributesRequest,
    ) -> GetObjectAttributesOutput:
        bucket_name = request["Bucket"]
        moto_backend = get_moto_s3_backend(context)
        bucket = get_bucket_from_moto(moto_backend, bucket_name)
        key = get_key_from_moto_bucket(moto_bucket=bucket, key=request["Key"])
        object_attrs = request.get("ObjectAttributes", [])
        response = GetObjectAttributesOutput()
        
        if "ETag" in object_attrs:
            response["ETag"] = key.etag.strip('"')
        if "StorageClass" in object_attrs:
            response["StorageClass"] = key.storage_class
        if "ObjectSize" in object_attrs:
            response["ObjectSize"] = key.size
        response["LastModified"] = key.last_modified
        if version_id := request.get("VersionId"):
            response["VersionId"] = version_id
        if key.multipart:
            response["ObjectParts"] = GetObjectAttributesParts(
                TotalPartsCount=len(key.multipart.partlist)
            )
        return response
def validate_bucket_name(bucket: BucketName) -> None: