### 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.
Expires=datetime.datetime.now(ZoneInfo("GMT")) + datetime.timedelta(hours=1),
        )
        # try 
        resp = aws_client.s3.get_(Bucket=s3_bucket, Key=_key_not_expired)
        assert "Expires" in resp
        assert resp["Expires"] > datetime.datetime.now(ZoneInfo("GMT"))
        snapshot.match("get--not-yet-expired", resp)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider,
        paths=[
            "$..ContentLanguage",
            "$..VersionId",
        ],
    )
    def test_upload_file_with_xml_preamble(self, s3_create_bucket, snapshot, aws_client):
        snapshot.add_transformer(snapshot.transform.s3_api())
        bucket_name = f"bucket-{short_uid()}"
        _key = f"key-{short_uid()}"
        body = '<?xml version="1.0" encoding="UTF-8"?><test/>'
        s3_create_bucket(Bucket=bucket_name)
        aws_client.s3.put_(Bucket=bucket_name, Key=_key, Body=body)
        response = aws_client.s3.get_(Bucket=bucket_name, Key=_key)
        snapshot.match("get_", response)
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        condition=LEGACY_S3_PROVIDER, reason="Get 404 Not Found instead of NoSuchBucket"
    )
    @pytest.mark.skip_snapshot_verify(condition=is_old_provider, paths=["$..Error.BucketName"])
    def test_bucket_availability(self, snapshot, aws_client):