message: show cancel events as hidden events if we wouldn't usually render them
diff: @@ -100,6 +100,15 @@ export function getHandlerTile(ev) {
  }
  }
  + // sometimes MKeyVerificationConclusion declines to render. Jankily decline to render and
  + // fall back to showing hidden events, if we're viewing hidden events
  + if (type === "m.key.verification.cancel" && SettingsStore.getValue("showHiddenEventsInTimeline")) {
  + const MKeyVerificationConclusion = sdk.getComponent("messages.MKeyVerificationConclusion");
  + if (!MKeyVerificationConclusion.prototype._shouldRender.call(null, ev, ev.request)) {
  + return;
  + }
  + }
  +
  return ev.isState() ? stateEventTileTypes[type] : eventTileTypes[type];
  }
  