### 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_
if os.environ.get("TEST_TARGET") == "AWS_CLOUD":
        return boto3.client("s3", config=conf, endpoint_url=endpoint_url)
    # TODO in future this should work with aws_stack.create_external_boto_client
    #      currently it doesn't as authenticate_presign_url_signv2 requires the secret_key to be 'test'
    # return aws_stack.create_external_boto_client(
    #     "s3",
    #     config=conf,
    #     endpoint_url=endpoint_url,
    #     aws_access_key_id=TEST_AWS_ACCESS_KEY_ID,
    # )
    return boto3.client(
        "s3",
        endpoint_url=endpoint_url,
        config=conf,
        aws_access_key_id=TEST_AWS_ACCESS_KEY_ID,
        aws_secret_access_key=TEST_AWS_SECRET_ACCESS_KEY,
    )
def _endpoint_url(region: str = "", localstack_host: str = None) -> str:
    if not region:
        region = config.AWS_REGION_US_EAST_1
    if os.environ.get("TEST_TARGET") == "AWS_CLOUD":
        if region == "us-east-1":
            return "https://s3.amazonaws.com"
        else:
            return f"http://s3.{region}.amazonaws.com"
    if region == "us-east-1":
        return f"{config.get_edge_url(localstack_hostname=localstack_host or S3_VIRTUAL_HOSTNAME)}"
    return config.get_edge_url(f"s3.{region}.{LOCALHOST_HOSTNAME}")
def _bucket_url(bucket_name: str, region: str = "", localstack_host: str = None) -> str: