Poll for submissions stuck in EFS and notify relevant teams

Request

• Base URL
  /efs-submissions-api (relative, and the document was published on a file host, not at the API’s origin)
• Auth
  none declared
• TypeScript
  https://skmtc.dev/companies-house/apis/emergency-filing-service-api/docs/events/handle-delayed-submissions/post.ts

  A function with typed inputs. Its response is checked against the schema.