message: fix: allow partial evaluation of checks in jsonfc factchecker
  This change should fix the entity check endpoint when some facts are
  missing, e.g. the retriever has not run yet.
diff: @@ -88,7 +88,13 @@ export class JsonRulesEngineFactChecker
  techInsightChecks.forEach(techInsightCheck => {
  const rule = techInsightCheck.rule;
  rule.name = techInsightCheck.id;
  + // Only run checks that have all the facts available:
  + const hasAllFacts = techInsightCheck.factIds.every(
  + retrieverId => !!facts[retrieverId],
  + );
  + if (hasAllFacts) {
  engine.addRule({ ...techInsightCheck.rule, event: noopEvent });
  + }
  });
  const factValues = Object.values(facts).reduce(
  (acc, it) => ({ ...acc, ...it.facts }),
  