Feature request

{
  "rules": {
    "@typescript-eslint/no-delete-optional": ["error"]
  }
}

type SomeType = { a: string };
const someObject: SomeType = {
  a: string;
}
delete someObject.a;
someObject.a.toString();

Expected Result

Should throw a compile error deleting non-optional property 'a'

Actual Result

Runtime error can't read property 'toString' of undefined