* Move the render_recaptcha? method to the Spammable concern,
  so it can be used from both the controllers and GraphQL
  mutations.
* Refactor logic and method naming in mutation to make it
  explicit that the #resolve method's args parameter is
  being mutated before being passed to the service layer as
  params
* Introduce ServiceCompatibility concern, to DRY up and
  abstract mutation-layer concerns related to processing
  graphql mutation field params to be compatible with those
  expected by the service layer
* Rename SpammableMutationFields concern to CanMutateSpammable
  to be more consistently named with other concerns
* Move and refactor the snippet_spam feature flag to be in the
  service layer, and be less coupled to the implementation
  details of spam checking.

See https://gitlab.com/gitlab-org/gitlab/-/issues/217722
for more details.