Heed the backoff time on Rate Limit Error
See RateLimitError in https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3roomsroomidinvite
Edited by Felix Schäfer
See RateLimitError in https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3roomsroomidinvite