### 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_
return _client("dynamodb")
@pytest.fixture(scope="class")
def dynamodb_resource() -> "DynamoDBServiceResource":
    return _resource("dynamodb")
@pytest.fixture(scope="class")
def dynamodbstreams_client() -> "DynamoDBStreamsClient":
    return _client("dynamodbstreams")
@pytest.fixture(scope="class")
def apigateway_client() -> "APIGatewayClient":
    return _client("apigateway")
@pytest.fixture(scope="class")
def cognito_idp_client() -> "CognitoIdentityProviderClient":
    return _client("cognito-idp")
@pytest.fixture(scope="class")
def iam_client() -> "IAMClient":
    return _client("iam")
@pytest.fixture(scope="class")
def s3_client() -> "S3Client":
    return _client("s3")
@pytest.fixture(scope="class")
def s3_vhost_client() -> "S3Client":