### 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.
FULL_CONTROL = "FULL_CONTROL"
    READ = "READ"
    WRITE = "WRITE"
class BucketVersioningStatus(str):
    Enabled = "Enabled"
    Suspended = "Suspended"
class ChecksumAlgorithm(str):
    CRC32 = "CRC32"
    CRC32C = "CRC32C"
    SHA1 = "SHA1"
    SHA256 = "SHA256"
class ChecksumMode(str):
    ENABLED = "ENABLED"
class CompressionType(str):
    NONE = "NONE"
    GZIP = "GZIP"
    BZIP2 = "BZIP2"
class DeleteMarkerReplicationStatus(str):
    Enabled = "Enabled"
    Disabled = "Disabled"
class EncodingType(str):
    url = "url"
class Event(str):