Response from `/context` borks when `events_before` is undefined.

[jevolk]

Steps to reproduce

When /context is called on an m.room.create event (though there are probably other scenarios where this holds) the server has no events_before. When events_before is empty, Ruma elides the empty events_before: [] from the JSON. Element-web rejects the response with an error in console that events_before is undefined. The room fails to load, infinite spinner.

events_before not required: https://spec.matrix.org/v1.16/client-server-api/#get_matrixclientv3roomsroomidcontexteventid

server side workaround: matrix-construct/ruma@c7e3627

Outcome

What did you expect?

What happened instead?

Operating system

No response

Browser information

No response

URL for webapp

No response

Application version

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Homeserver

No response

Will you send logs?

Yes