### 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_
service: str,
        region: str = None,
        signer_factory: Callable[
            [botocore.credentials.Credentials, str, str], botocore.auth.BaseSigner
        ] = botocore.auth.SigV4QueryAuth,
        endpoint_url: str = None,
    ):
        region = region or boto3_session.region_name
        region = region or config.DEFAULT_REGION
        credentials = boto3_session.get_credentials()
        creds = credentials.get_frozen_credentials()
        if not endpoint_url:
            if os.environ.get("TEST_TARGET", "") == "AWS_CLOUD":
                
                resolver: EndpointResolver = boto3_session._session.get_component(
                    "endpoint_resolver"
                )
                endpoint_url = "https://" + resolver.construct_endpoint(service, region)["hostname"]
            else:
                endpoint_url = config.get_edge_url()
        return SigningHttpClient(signer_factory(creds, service, region), endpoint_url=endpoint_url)
    return factory
@pytest.fixture(scope="class")
def dynamodb_client() -> "DynamoDBClient":