### 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_
)
        try:
            iam_client.delete_user(UserName=username)
        except Exception:
            LOG.debug("Error deleting user '%s' during test cleanup", username)
@pytest.fixture
def wait_and_assume_role(sts_client):
    def _wait_and_assume_role(role_arn: str, session_name: str = None):
        if not session_name:
            session_name = f"session-{short_uid()}"
        def assume_role():
            return sts_client.assume_role(RoleArn=role_arn, RoleSessionName=session_name)[
                "Credentials"
            ]
        
        keys = retry(assume_role, sleep=5, retries=4)
        return keys
    return _wait_and_assume_role
@pytest.fixture
def create_role(iam_client):
    role_names = []
    def _create_role(**kwargs):
        if not kwargs.get("RoleName"):
            kwargs["RoleName"] = f"role-{short_uid()}"
        result = iam_client.create_role(**kwargs)
        role_names.append(result["Role"]["RoleName"])
        return result
    yield _create_role
    for role_name in role_names: