### 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_
if not is_aws_cloud() and not LEGACY_S3_PROVIDER:
            monkeypatch.setattr(config, "S3_SKIP_SIGNATURE_VALIDATION", False)
        src_key = "src"
        s3_client.put_(Bucket=s3_bucket, Key=src_key, Body="something")
        # copy 
        dest_key = "dest"
        response = s3_client.copy_(
            Bucket=s3_bucket,
            CopySource={"Bucket": s3_bucket, "Key": src_key},
            Key=dest_key,
        )
        snapshot.match("copy-obj", response)
        # Crea
        dest_key2 = "dest"
        url = s3_presigned_client.generate_presigned_url(
            "copy_",
            Params={
                "Bucket": s3_bucket,
                "CopySource": {"Bucket": s3_bucket, "Key": src_key},
                "Key": dest_key2,
            },
        )
        request_response = .put(url, verify=False)
        assert request_response.status_code == 200
    @pytest.mark.only_localstack
    @pytest.mark.parametrize("case_sensitive_headers", [True, False])
    def test_s3_get_response_case_sensitive_headers(