Make unknown pushrule conditions not match
Make unknown pushrule conditions not match

Unknown conditions previously were assumed to match, but given rules
can be added on the server as base rules, it's probably better to not
match unknown conditions.

krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk