### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

The Complete Multipart Upload operation generates the **InternalError** error for non-existing uploads.

### Expected Behavior

The Complete Multipart Upload operation generates the **NoSuchUpload** error for non-existing uploads.

### How are you starting LocalStack?

With a `docker run` command

### Steps To Reproduce

    docker run -it --rm -p 4566:4566 localstack/localstack

    aws s3api create-bucket --bucket test --endpoint-url http://localhost:4566 --create-bucket-configuration LocationConstraint=us-west-2

    aws s3api complete-multipart-upload --bucket test --endpoint-url http://localhost:4566 --key test --upload-id test

### Environment

```markdown
- OS: Windows 11
- LocalStack: latest
```


### Anything else?

The Abort Multipart Upload operation works correctly in LocalStack.

The official documentation: https://docs.aws.amazon.com/AmazonS3/latest/API/API_CompleteMultipartUpload.html
Amazon S3 throws the correct **NoSuchUpload** error for both Abort and Complete operations.
self,
        aws_client,
        s3_bucket,
        kms_create_key,
        snapshot,
    ):
        snapshot.add_transformer(
            [
                snapshot.transform.resource_name("SSEKMSKeyId"),
                snapshot.transform.key_value(
                    "Bucket", reference_replacement=False, value_replacement="<bucket>"
                ),
                snapshot.transform.key_value("Location"),
            ]
        )
        key_before_set = "test-sse-bucket-before"
        key_after_set = "test-sse-bucket-after"
        data = b"test-sse"
        key_id = kms_create_key()["KeyId"]
        response = aws_client.s3.put_(Bucket=s3_bucket, Key=key_before_set, Body=data)
        snapshot.match("put-obj-default-before-setting", response)
        response = aws_client.s3.get_(Bucket=s3_bucket, Key=key_before_set)
        snapshot.match("get-obj-default-before-setting", response)
        response = aws_client.s3.put_bucket_encryption(
            Bucket=s3_bucket,
            ServerSideEncryptionConfiguration={
                "Rules": [
                    {
                        "ApplyServerSideEncryptionByDefault": {