### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

copyObject and putObject (and perhaps other requests) requests are accepted and do not return an error when an SSE KMS key is specified. 

### Expected Behavior

The error which should be returned is KMS.NotFoundException.

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    Localstack testcontainers 

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

   Call copyObject/putObject via latest version using AWS SDK V2 and specific a ssekmsKeyId.

```java
final var copyObjectRequestBuilder =
        CopyObjectRequest.builder()
            .serverSideEncryption(ServerSideEncryption.AWS_KMS)
            .ssekmsKeyId("NON-EXISTENT KMS KEY")
            .sourceBucket(sourceBucketName)
            .sourceKey(sourceKey)
            .destinationBucket(destinationBucket)
            .destinationKey(destinationKey);
final var copyObjectResponse = sourceRegionS3Client.copyObject(copyObjectRequest); // Error should be thrown here but localstack does not return an error
```

### Environment

```markdown
- OS: MacOS 13.0
- LocalStack: Latest (v1.2.0)
```


### Anything else?

_No response_
# Sign
        # http
        _key = "key-header-overrides"
        s3_client.put_(Bucket=s3_bucket, Key=_key, Body="something")
        expiry_date = "Wed, 21 Oct 2015 07:28:00 GMT"
        response = s3_client.get_(
            Bucket=s3_bucket,
            Key=_key,
            ResponseCacheControl="max-age=74",
            ResponseContentDisposition='attachment; filename="foo.jpg"',
            ResponseContentEncoding="identity",
            ResponseContentLanguage="de-DE",
            ResponseContentType="image/jpeg",
            ResponseExpires=expiry_date,
        )
        snapshot.match("get-", response)
    @pytest.mark.only_localstack
    @pytest.mark.skipif(condition=LEGACY_S3_PROVIDER, reason="Testing new ASF handler behaviour")
    def test_virtual_host_proxying_headers(self, s3_client, s3_bucket):