Remove it from request handler since there's already the context of the
request path, added through TraceLayer.

Upgrades Ruma again to make this work.

Should make the code a little bit easier to read.

Co-authored-by: Timo Kösters <timo@koesters.xyz>

… and refactor push rule code along the way.

this also reverts some stateres changes

TIL body.device_id != (*body).device_id, which is pretty bad, so I
renamed body.device_id to body.sender_device

See https://matrix.org/docs/spec/client_server/r0.6.1#id87