### 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.
code: str = "NoSuchCORSConfiguration"
    sender_fault: bool = False
    status_code: int = 404
    BucketName: Optional[BucketName]
class MissingSecurityHeader(ServiceException):
    code: str = "MissingSecurityHeader"
    sender_fault: bool = False
    status_code: int = 400
    MissingHeaderName: Optional[MissingHeaderName]
class InvalidPartOrder(ServiceException):
    code: str = "InvalidPartOrder"
    sender_fault: bool = False
    status_code: int = 400
    UploadId: Optional[MultipartUploadId]
class InvalidStorageClass(ServiceException):
    code: str = "InvalidStorageClass"
    sender_fault: bool = False
    status_code: int = 400
    StorageClassRequested: Optional[StorageClass]
class MethodNotAllowed(ServiceException):
    code: str = "MethodNotAllowed"
    sender_fault: bool = False
    status_code: int = 405
    Method: Optional[Method]
    ResourceType: Optional[ResourceType]
AbortDate = datetime
class AbortIncompleteMultipartUpload(TypedDict, total=False):