Author name doesn't render correctly with YAML listing content when using extended author schema

Bug description

When using a YAML listing content file, the first two examples render correctly, but the third does not.

Renders correctly:

- title: "Item 1"
  author: Bob Smith

Renders correctly:

- title: "Item 1"
  author: 
    - Bob Smith
    - Anna Smith

Renders author names as [object Object]:

- title: "Item 1"
  author: 
    - name:
        family: Smith
        given: Anna
    - name:
        family: Smith
        given: Bob

The bug is identical to closed issue: https://github.com/quarto-dev/quarto-cli/issues/4881#issue-1630364099

Steps to reproduce

listing.qmd:

---
title: "Listing Example"
listing:
  id: sample-listings
  contents: listing.yaml
  sort: "date desc"
  type: table
---

listing.yaml:

- title: "Item 1"
  author: 
    - name:
        family: Smith
        given: Anna
    - name:
        family: Smith
        given: Bob

Expected behavior

The author list processed and names appear as documented in the Quarto docs.

Actual behavior

The reprex is rendered with author names as [object Object]:

Your environment

OS: macOS 15.2 24C101 arm64
IDE: VSCode 1.96.3

Quarto check output

quarto check
Quarto 1.6.40
[✓] Checking environment information...
      Quarto cache location: /Users/iain/Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.4.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.46.3: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.6.40
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /Library/TeX/texbin
      Version: 2022

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.10.12 (Conda)
      Path: /opt/homebrew/Caskroom/miniforge/base/bin/python
      Jupyter: 5.7.2
      Kernels: julia-1.8, python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.4.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.48
      rmarkdown: 2.28

[✓] Checking Knitr engine render......OK

Start by rendering listing.qmd with listing.yaml using the extended author schema, then compare the output with the simpler author examples in the report. Trace how the listing content's structured author names are processed; done means the family and given names render as documented instead of [object Object].