message: Report master key cache status in rageshakes
diff: @@ -122,6 +122,8 @@ export default async function sendBugReport(bugReportEndpoint: string, opts: IOp
  body.append("ssss_key_in_account", String(!!(await secretStorage.hasKey())));
  const pkCache = client.getCrossSigningCacheCallbacks();
  + body.append("master_pk_cached",
  + String(!!(pkCache && await pkCache.getCrossSigningKeyCache("master"))));
  body.append("self_signing_pk_cached",
  String(!!(pkCache && await pkCache.getCrossSigningKeyCache("self_signing"))));
  body.append("user_signing_pk_cached",
  