Describe the feature:

Elasticsearch version (bin/elasticsearch --version): 7.10

elasticsearch-py version (elasticsearch.__versionstr__): 7.12.1

Please make sure the major version matches the Elasticsearch server you are running.

Description of the problem including expected versus actual behavior: ES doesn't have /_watcher/_query/watches endpoint till 7.11. But the client, even if the ES version is < 7.11, tries to send request to the same endpoint resulting in below error.
elasticsearch.exceptions.RequestError: RequestError(400, 'invalid_index_name_exception', "Invalid index name [_watcher], must not start with '_', '-', or '+'")

Steps to reproduce:

1. Make sure the ES version >7 and <7.11
2. Execute es.xpack.client.watcher.query_watches()