Full room state is no longer available to widgets unless they use the update_state action #127
Description
#116 introduced changes to how the matrix-widget-api behaves when used within a widget container/host application (such as Element Web).
Specifically, for a widget to get full state events for a room it needs to consume the update_state action as the read_events action will only return state events from the timeline (which might be limited and may not have been back paginated)
Affected versions of matrix-widget-api are: v0.12.0 and v0.13.0
A new UnstableApiVersion was added in v0.13.0 to provide a version for the widget to opt-in with.
A proposed fix is being worked on in #126 that uses that new version to support both modes of operation.