### 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.
bucket = f"bucket-{short_uid()}"
        s3_create_bucket(Bucket=bucket)
        aws_client.s3.put_(Bucket=bucket, Key="foo", Body=b'{"foo": "bar"}')
        with 
            aws_client.s3.get_(Bucket=bucket, Key="foo", IfMatch='"not good etag"')
        snapshot.match("get--if-match", e.value.response)
    @pytest.mark.aws_validated
    @pytest.mark.xfail(reason="Error format is wrong and missing keys")
    def test_s3_invalid_content_md5(self, s3_bucket, snapshot, aws_client):
        # put 
        # TODO
        hashes = ["__invalid__", "000", "not base64 encoded checksum", "MTIz"]
        for index, md5hash in enumerate(hashes):
            with 
                aws_client.s3.put_(
                    Bucket=s3_bucket,
                    Key="test-key",
                    Body="something",
                    ContentMD5=md5hash,
                )
            snapshot.match(f"md5-error-{index}", e.value.response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider, paths=["$..VersionId", "$..ContentLanguage"]
    )
    def test_s3_upload_download_gzip(self, s3_bucket, snapshot, aws_client):