### 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, s3_bucket, monkeypatch, patch_s3_skip_signature_validation_false, aws_client
    ):
        aws_client.s3.put_(Body="test-value", Bucket=s3_bucket, Key="test")
        presigned_request = aws_client.s3.generate_presigned_url(
            ClientMethod="get_",
            Params={"Bucket": s3_bucket, "Key": "test"},
            ExpiresIn=2,
        )
        # slee
        time.sleep(3)
        # atte
        response = .get(presigned_request)
        # resp
        # "Sig
        assert response.status_code in [400, 403]
        # set 
        monkeypatch.setattr(config, "S3_SKIP_SIGNATURE_VALIDATION", True)
        response = .get(presigned_request)
        assert response.status_code == 200
        assert b"test-value" == response.content
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        condition=LEGACY_S3_PROVIDER, reason="Policy is not validated in legacy provider"
    )
    @pytest.mark.parametrize(
        "signature_version",
        ["s3", "s3v4"],
    )
    def test_post_request_malformed_policy(