### 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_
s3_client.put_(Bucket=s3_bucket, Key="data.txt", Body=b"69\n420\n")
        response = s3_client.get__attributes(
            Bucket=s3_bucket,
            Key="data.txt",
            ObjectAttributes=["StorageClass", "ETag", "ObjectSize", "ObjectParts"],
        )
        snapshot.match("-attrs", response)
        multipart_key = "test-get-obj-attrs-multipart"
        s3_multipart_upload(bucket=s3_bucket, key=multipart_key, data="upload-part-1" * 5)
        response = s3_client.get__attributes(
            Bucket=s3_bucket,
            Key=multipart_key,
            ObjectAttributes=["StorageClass", "ETag", "ObjectSize", "ObjectParts"],
        )
        snapshot.match("-attrs-multiparts-1-part", response)
        multipart_key = "test-get-obj-attrs-multipart-2"
        s3_multipart_upload(bucket=s3_bucket, key=multipart_key, data="upload-part-1" * 5, parts=2)
        response = s3_client.get__attributes(
            Bucket=s3_bucket,
            Key=multipart_key,
            ObjectAttributes=["StorageClass", "ETag", "ObjectSize", "ObjectParts"],
            MaxParts=3,
        )
        snapshot.match("-attrs-multiparts-2-parts", response)
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(
        condition=is_old_provider, paths=["$..VersionId", "$..Error.RequestID"]
    )
    def test_multipart_and_list_parts(self, s3_client, s3_bucket, s3_multipart_upload, snapshot):