### 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.
DOCUMENT = "DOCUMENT"
    LINES = "LINES"
class MFADelete(str):
    Enabled = "Enabled"
    Disabled = "Disabled"
class MFADeleteStatus(str):
    Enabled = "Enabled"
    Disabled = "Disabled"
class MetadataDirective(str):
    COPY = "COPY"
    REPLACE = "REPLACE"
class MetricsStatus(str):
    Enabled = "Enabled"
    Disabled = "Disabled"
class ObjectAttributes(str):
    ETag = "ETag"
    Checksum = "Checksum"
    ObjectParts = "ObjectParts"
    StorageClass = "StorageClass"
    ObjectSize = "ObjectSize"
class ObjectCannedACL(str):
    private = "private"
    public_read = "public-read"
    public_read_write = "public-read-write"
    authenticated_read = "authenticated-read"
    aws_exec_read = "aws-exec-read"
    bucket_owner_read = "bucket-owner-read"
    bucket_owner_full_control = "bucket-owner-full-control"
class ObjectLockEnabled(str):