This release adds opt-in server-level enforcement of MSC4284 policy
servers via two new `[global]` keys: `enable_policy_servers` and
`policy_server_request_timeout`. Surface both as Ansible variables
matching tuwunel's upstream defaults (off, 5s timeout) and refresh the
docs section that previously claimed MSC4284 needed no playbook
configuration.

Closes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/5213.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>