message: properly render <Missing* /> components
  Corrects logic ensuring `<MissingAnnotation />` and `<MissingEventsRestEndpoint />`
  render correctly. Previously, neither component would render from
  within the `<Content />` component.
diff: @@ -152,6 +152,14 @@ export const EntitySplunkOnCallCard = () => {
  return { usersHashMap, foundTeams };
  });
  + if (!teamAnnotation && !routingKeyAnnotation) {
  + return <MissingAnnotation />;
  + }
  +
  + if (!eventsRestEndpoint) {
  + return <MissingEventsRestEndpoint />;
  + }
  +
  if (error instanceof UnauthorizedError) {
  return <MissingApiKeyOrApiIdError />;
  }
  @@ -175,10 +183,6 @@ export const EntitySplunkOnCallCard = () => {
  team: Team | undefined;
  usersHashMap: any | undefined;
  }) => {
  - if (!teamAnnotation && !routingKeyAnnotation) {
  - return <MissingAnnotation />;
  - }
  -
  if (!team) {
  return (
  <InvalidTeamAnnotation
  @@ -187,10 +191,6 @@ export const EntitySplunkOnCallCard = () => {
  );
  }
  - if (!eventsRestEndpoint) {
  - return <MissingEventsRestEndpoint />;
  - }
  -
  const teamName = team.name || '';
  return (
  