### 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_
self, s3_client, s3_bucket, monkeypatch, patch_s3_skip_signature_validation_false
    ):
        s3_client.put_(Body="test-value", Bucket=s3_bucket, Key="test")
        presigned_request = s3_client.generate_presigned_url(
            ClientMethod="get_",
            Params={"Bucket": s3_bucket, "Key": "test"},
            ExpiresIn=2,
        )
        # slee
        time.sleep(3)
        # atte
        response = .get(presigned_request)
        # resp
        # "Sig
        assert response.status_code in [400, 403]
        # set 
        monkeypatch.setattr(config, "S3_SKIP_SIGNATURE_VALIDATION", True)
        response = .get(presigned_request)
        assert response.status_code == 200
        assert b"test-value" == response.content
    @pytest.mark.aws_validated
    @pytest.mark.xfail(
        condition=LEGACY_S3_PROVIDER, reason="Policy is not validated in legacy provider"
    )
    @pytest.mark.parametrize(
        "signature_version",
        ["s3", "s3v4"],
    )
    def test_post_request_malformed_policy(