- Fixes bug related to `merge_request_to_resolve_discussions_of` which
  was introduced when the `yield` was removed from the view.
- Combines existing separate layouts into a single view (this was the
  source of the above bug). The layout hardcoded the name of the
  separate view, and was never reused, so it served no useful purpose
  as a layout anyway.
- Removes unused `has_submit` flag
- Renames views to be consistent "`captcha_check`" terminology used in
  controller and helper methods
- Reorganizes and adds comments to views
- See https://gitlab.com/gitlab-org/gitlab/-/merge_requests/67195