message: dont expose entire pgsearch document row in the index delete event
diff: @@ -236,7 +236,7 @@ class Batch {
  }
  async deleteDocument(context) {
  - let { branch, type, id } = context;
  + let { branch, type, id, doc } = context;
  let { rows } = await this.client.query('select branch, type, id, source, generation, upstream_doc as "upstreamDoc" from documents where branch=$1 and type=$2 and id=$3', [branch, type, id]);
  let [ eventContext={} ] = rows;
  @@ -247,7 +247,7 @@ class Batch {
  await this.client.emitEvent('delete', eventContext);
  log.debug("delete %s %s", type, id);
  - await this._handleGrantOrGroupsTouched(context);
  + await this._handleGrantOrGroupsTouched({ type, id, doc });
  }
  async done() {
  