hierarchy: afterRead hook uses doc._status instead of request draft intent when computing paths

Describe the Bug

In packages/payload/src/hierarchy/hooks/collectionAfterRead.ts, the draft flag passed to computePaths is derived from the document's own _status:

draft: doc._status === 'draft',

This is incorrect. doc._status reflects whether this specific document has unpublished changes — it does not reflect the request's draft intent (e.g. draft: true in the local API or ?draft=true in the REST API / live preview).

Broken scenario:

1. Parent page: published slug "about", draft slug "about-us" (draft saved but not published)
2. Child page: no pending draft changes → _status: 'published'
3. User opens child in live preview (draft: true)
4. doc._status === 'draft' is false for the child → computePaths receives draft: false → fetches the published parent → breadcrumb shows "about/child" instead of "about-us/child"

The user is in draft/preview mode and expects the entire path tree to reflect draft state, but doc._status only tells you about the document itself, not the request's intent.

The root cause is that draft is not currently available as a hook argument, so there is no clean way to derive the request's draft intent from within afterRead. A proper fix requires exposing draft in the hook args — see: https://github.com/payloadcms/payload/issues/16180

Link to the code that reproduces this issue

https://github.com/jhb-software/payload-issue-reproductions/tree/main/hierarchy-afterread-wrong-draft-context/

Reproduction Steps

1. Clone the repo / open the folder hierarchy-afterread-wrong-draft-context/
2. pnpm install
3. pnpm test:int — the test fails, proving the bug

Which area(s) are affected?

• plugin: hierarchy

Environment Info

Binaries:
  Node: 24.16.0
  npm: 11.13.0
  Yarn: 1.22.22
  pnpm: 11.9.0
Relevant Packages:
  payload: 4.0.0-internal.e16cf59
  @payloadcms/db-sqlite: 4.0.0-internal.e16cf59
  @payloadcms/drizzle: 4.0.0-internal.e16cf59
  @payloadcms/translations: 4.0.0-internal.e16cf59
Operating System:
  Platform: linux
  Arch: x64
  Version: #134-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 26 18:43:11 UTC 2026
  Available memory (MB): 3916
  Available CPU cores: 1

Start with packages/payload/src/hierarchy/hooks/collectionAfterRead.ts and review how hook arguments are exposed, alongside the design referenced in issue #16180. Reproduce the failure from hierarchy-afterread-wrong-draft-context/ with pnpm test:int. Done means the failing test passes and preview paths use the request's draft intent for the parent tree.