### 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.
DaysAfterInitiation: Optional[DaysAfterInitiation]
class AbortMultipartUploadOutput(TypedDict, total=False):
    RequestCharged: Optional[RequestCharged]
class AbortMultipartUploadRequest(ServiceRequest):
    Bucket: BucketName
    Key: ObjectKey
    UploadId: MultipartUploadId
    RequestPayer: Optional[RequestPayer]
    ExpectedBucketOwner: Optional[AccountId]
class AccelerateConfiguration(TypedDict, total=False):
    Status: Optional[BucketAccelerateStatus]
class Owner(TypedDict, total=False):
    DisplayName: Optional[DisplayName]
    ID: Optional[ID]
class Grantee(TypedDict, total=False):
    DisplayName: Optional[DisplayName]
    EmailAddress: Optional[EmailAddress]
    ID: Optional[ID]
    Type: Type
    URI: Optional[URI]
class Grant(TypedDict, total=False):
    Grantee: Optional[Grantee]
    Permission: Optional[Permission]
Grants = List[Grant]
class AccessControlPolicy(TypedDict, total=False):