### 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.
Start: Optional[Start]
    End: Optional[End]
class Stats(TypedDict, total=False):
    BytesScanned: Optional[BytesScanned]
    BytesProcessed: Optional[BytesProcessed]
    BytesReturned: Optional[BytesReturned]
class StatsEvent(TypedDict, total=False):
    Details: Optional[Stats]
class SelectObjectContentEventStream(TypedDict, total=False):
    Records: Optional[RecordsEvent]
    Stats: Optional[StatsEvent]
    Progress: Optional[ProgressEvent]
    Cont: Optional[ContinuationEvent]
    End: Optional[EndEvent]
class SelectObjectContentOutput(TypedDict, total=False):
    Payload: Iterator[SelectObjectContentEventStream]
class SelectObjectContentRequest(ServiceRequest):
    Bucket: BucketName
    Key: ObjectKey
    SSECustomerAlgorithm: Optional[SSECustomerAlgorithm]
    SSECustomerKey: Optional[SSECustomerKey]
    SSECustomerKeyMD5: Optional[SSECustomerKeyMD5]
    Expression: Expression
    ExpressionType: ExpressionType
    RequestProgress: Optional[RequestProgress]
    InputSerialization: InputSerialization
    OutputSerialization: OutputSerialization
    ScanRange: Optional[ScanRange]
    ExpectedBucketOwner: Optional[AccountId]
class UploadPartCopyOutput(TypedDict, total=False):