Splits the config options for the timings of a delayed leave event into two sets: one for when delegation is available (as you can relax the timings and get more stable calls this way), and another for when it's unavailable (as we must continue to gracefully downgrade even after Matrix 2.0 is fully rolled out).
This works by bluntly hitting the delegation endpoints without auth before joining to check for a 404.
Support for events with an array of memberships from different devices was removed over a year ago in matrix-js-sdk ffd3c9575e9def576739baf6b1dc329b0db55c0c.
* Change EULA to SSLA
- rename i18n fields
- update the config property to `ssla` and deprecate `eula`
- use `eula` instead of ssla in case it is provided in the config.
* fix default config
* completely remove eula fallback
Robin