### 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.
response = aws_client.s3.list_multipart_uploads(Bucket=s3_bucket, MaxUploads=1)
        snapshot.match("list-uploads-max-uploads", response)
        # TODO
        response = aws_client.s3.list_multipart_uploads(Bucket=s3_bucket, Delimiter="/")
        snapshot.match("list-uploads-delimiter", response)
    @pytest.mark.aws_validated
    @pytest.mark.skip(
        reason="Behaviour not implemented yet: https://github.com/localstack/localstack/issues/6882"
    )
    # there is currently no server side encryption is place in LS, ETag will be different
    @pytest.mark.skip_snapshot_verify(paths=["$..ETag"])
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider, paths=["$..ContentLanguage", "$..SSEKMSKeyId", "$..VersionId"]
    )
    def test_s3_multipart_upload_sse(
        self,
        aws_client,
        s3_bucket,
        s3_multipart_upload_with_snapshot,
        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("UploadId"),
                snapshot.transform.key_value("Location"),