shallow-clone the filter, so the timeline filter doesnt get written into it later on
shallow-clone the filter, so the timeline filter doesnt get written into it later on

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